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 -3
Sheet 1 of 4
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
.6
N in blows /ft p
(pcf) is
L
MATERIAL DESCRIPTION
a
Z o
10 zo 30 ao
105 115 125
m
n
(ASTM D2488)
a
F-
�
>
0
E
a
a o
SHEAR STRENGTH, ksf
Water Content, %
W
O
E
y
QpX UC TV 'llf
WP WN WL
VS A VSR O
Surface Elev.: 6366.6
1 2 3 a
20 40 60
0
SILT (ML) Medium -dark brown slightly moist silt with
fine - medium grained sand, clay and siltstone inclusions.
6365
5
20
20
6360
SANDY LEAN CLAY (CL) Dark brown slightly moist sandy lean 9.0
10
clay with fine to medium grained sand inclusions. Some coal and
20
siltstone fragments, trace organic material @ 10 feet.
20
6355
\
15
\
SANDSTONE Light brown slightly moist sandstone. 14.5
• ::
38
8
6350
20
6345
COAL Black, slightly moist fractured and friable coal. 24.0
-25-
50/5
50/
5
6340
130
SILTSTONE Light grey /grey siltstone with fine sand inclusions. 29.0
X ;
Continued Next Pa e
x x
Completion Depth: 100.0
Remarks:
Date Boring Started: 6/18/09
Date Boring Completed: 6/19/09
SAMPLE TYPES
WATER LEVELS
Logged By: BSE
m Auger Cutting 'Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
End of Drilling
Northing: 402650.2
® Split Spoon n Rock Core
Eastin 1450672.6
jL hrs After Drilling: 75.28
9�
The stratification lines represent approbmate boundaries. The transition may be gradual.