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 -5
Sheet 1 of 1
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
iu
TEST DATA
DENSITY
w
o
� \
N in blows /ft @
(pcf) it
o
t
MATERIAL DESCRIPTION
ii
> 0
10 20 30 40
105 115 125
c
a
(ASTM D2488)
a
1
Z
w
Q
Q- $
SHEAR STRENGTH, ksf
Water Content,
E
Q X UC D TV jIE
W W W
Surface Elev.: 6574.0
U)
VS A VSR O
0
1 2 3 4
20 40 60
CLAY (CL -CH) Medium -dark brown slightly moist clay with
sand, gravel and occasional cobbles.
6570
5
7
SANDSTONE Medium brown very fine grained sandstone
1
(cobble ?). 6.5
6565
1
1
- 10-
CLAY (CL -CH) Medium -dark brown slightly moist clay with
b° 1
sand, gravel and occasional cobbles.
14
6560
SANDSTONE Medium brown very fine grained sandstone with 13.4
wavey sub - horizontal bedding.
. •
63%
- 15-
SILTSTONE Brown/grey siltstone with wavey and planar 15.0
x X
bedding.
x x
X x
X x
X x
X x
X x
X x
57%
6555
SHALE Brown/grey shale. 18.4
20
SILTSTONE Grey with red and orange mottling siltstone grading 20.0
x x
toward shale at depth.
x x
X x
X x
X x
X x
x x
X x
17%
6550
X x
x x
X x
25
X x
25.0
30
Completion Depth: 25.0
Remarks:
Date Boring Started: 6/25/09
Date Boring Completed: 6/25/09
Logged By. BWL
SAMPLE TYPES WATER LEVELS
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
While Drilling:
m Auger Cutting 'Shelby Tube
Northing: 402021.4
End of Drilling:
® Split Spoon a
Eastin : 1450882.6
Rock Core
hrs After Drilling: DRY
10
i ne stranncation lines represent apprommate boundaries. The transition may be gradual.