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 -6
Sheet 1 of 3
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
m
TEST DATA
DENSITY
rn
N in blows /ft ®
(pcf)
w
MATERIAL DESCRIPTION
a
> 0
10 20 30 40
105 115 125
(ASTM D2488)
CL
0
O
SHEAR STRENGTH, ksf
Water Content, %
w
E
v7
in
VS o VSR O
Surface Elev.: 6567.7
1 2 3 4
20 40 60
0
LEAN CLAY (CL) Brown /grey moist lean clay with fine grained
sand and silt. Trace roots.
6565
5
19
19
SILTY SAND (SM) Light brown slightly moist fine grained sand 4.7
with trace coarse sand.
/
6560
/
9
CLAY (CL -CH) Tan slightly moist clay with some orange /grey 9.0
10
streaks. Minor fine grained sand. Trace roots and gravel.
9
1
1
6555
1
1
15
1
11
15
CLAY (CL -CH) Tan slightly moist clay with some orange /grey 16.0
21
streaks. Minor fine grained sand. 10% gravel up to 1 ".
21
6550
/
/1
20
15
6545
50/
1 ,q,50/2
25
2
6540
50/
��
50/1
SHALE Light tan - medium brown shale with coal dust seams. 29.0
30
Continued Next Page
Completion Depth: 74.5
Remarks:
Date Boring Started: 6/20/09
Date Boring Completed: 6/22/09
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- 402144.6
® Split Spoon a Rock Core
Eastin : 1450500.2
hrs After Drilling:
The stratification lines represent approbmate boundaries. The transition may be gradual.