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 -8
Sheet 2 of 2
Project: Proposed RIDE Expansion
Location: West Elk Mine, Somerset,
client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
TEST DATA
DENSITY
d
w
a�
rn
o
-d
m
3 0
N in blows/ft OO
(pcf)
a
MATERIAL DESCRIPTION
ii
> 0
10 20 30 40
105 115 125
.'
C
(ASTM D2488)
CL
°
SHEAR STRENGTH, ksf
Water Content, %
LLl
O
E
N
O X UC A TV X
WP WN W
a)
VS A VSR O
1 2 3 4
20 40 60
30
SANDSTONE Light - medium grey sandstone interbedded with
•,
50/
50/1
siltstone.
1
»
..
53%
6745
35
35.0
40
45
50
55
60
Completion Depth: 35.0
Remarks:
Date Boring Started: 6/24/09
Date Boring Completed: 6/24/09
Logged By: BWL
SAMPLE TYPES WATER LEVELS
Drilling Contractor: Haztech
While Drilling:
m Auger Cutting 'Shelby Tube
Drilling Method: HSA/CORE
End of Drilling:
Northing: 401418.0
® Split Spoon a Rock Core
Eastin : 1450558.8
hrs After Drilling: DRY
10
0
The stratification lines represent approbmate boundaries. The transition may be gradual.