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

•
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Barr Engineering Company ..
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -9
� Sheet 1 of 2
Project: Proposed RPE E�ansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
TEST DATA
DENSITY
w
o
\
N in blows/ft O
(pcf) is
i
t
MATERIAL DESCRIPTION
L
T
z
10 20 30 ao
105 115 125
C
(ASTM D2488)
c
SHEAR STRENGTH, ksf
Water Content, %
uJ
O
E
N
Q X UC A TV )K
WP WN WL
�
VS A VSR O
Surface Elev.: 6784.1
1 2 3 a
20 40 60
0
CLAY (CL -CH) Medium brown slightly moist clay with silt, sand
and gravel. Some coarse sand and organics.
NNL'
6780
5
13
13
I t
6775
I
I
I
1
10
19
I
I
19
6770
15
CLAY (CL -CH) Me dium -dark brown slightly moist clay with silt 15.0
20
sand and >1" gravel.
20
I
6765
I
I
1
1
-20-
SANDSTONE Medium brown dry sandstone with siltstone. 20.0
.
h2
24
6760
25
CLAY (CL -CH) Medium brown slightly moist clay with silt, sand 94 5
50/3
and gravel. 25.0
50/
SHALE Medium brown /grey slightly moist shale with 26.0
x x
3
»
carbonaceous stringers and orange slickensides.
x x
x x
SILTSTONE Medium -light brown /grey dry siltstone with dark
x x
grey wave laminations.
x x
x x
6755
x x
x x
x x
30
----------- QnTiriuealOeR e --- - - - - --
x x
Completion Depth: 40.0
Remarks:
Date Boring Started: 6/24/09
Date Boring Completed: 6/24/09
SAMPLE TYPES
WATER LEVELS
Logged By. BWL
m Auger Cutting 'Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 401190.5
N Split Spoon n Rock Core
End of Drilling:
Eastin : 1450809.9
hrs After Drilling:
The stratification lines represent appropmate boundaries. The transition may be gradual.