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 -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
TEST DATA
DENSITY
w
o
of
\
N in blows /ft o0
(pcf) is
w
MATERIAL DESCRIPTION
0 n
> o
to zo 30 ao
tos 115 125
c
(ASTM D2488)
C
Z cy
o
T
o_
SHEAR STRENGTH, ksf
Water Content, %
15
E
rn
Qp X UC o TV X
Wp Wry WL
Surface Elev.. 6574.0
cc
VS & VSR O
t 2 3 a
20 40 so
0
CLAY (CL -CH) Medium -dark brown slightly moist clay with
sand, gravel and occasional cobbles.
6570
5
7
q
SANDSTONE Medium brown very fine grained sandstone
(cobble ?). 6.5
6565
1
1
10
CLAY (CL -CH) Medium -dark brown slightly moist clay with
14
LL 1
sand, gravel and occasional cobbles.
V
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
X x
bedding.
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
7%
1
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
SAMPLE TYPES
WATER LEVELS
Logged By BWL
m Auger Cutting ,Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 402021.4
® Split Spoon
End of Drilling:
Eastin : 1450882.6
Rock Core
hrs After Drilling: DRY
i ne strauncauon lines represent approwmate Doundanes. 1 ne transition may be gradual.