2006-06-07_PERMIT FILE - C1996083

• Permit No: C1996083
• IBM Index Class Name: Permit File
• Doc Date: 6/7/2006
• Doc Name: 02/15/2006 Gob Pile #2 Stability Evaluation TR-42 Buckhorn Geotech Inc
• Section_Exhibit Name: Volume IX Coal Waste Disposal Area No. 2
• Media Type: D
• Archive: No

L OG OF EXPL ORA TOR Y DRILLING - BOREHOLE BG05- 02
SURFACE ELEVATION: Approx. 6,061 feet at time of drilling DRILL STEM: 4.25" solid stem auger
DRILLER: McCracken Drilling SAMPLER: California Split Spoon
DRILL RIG: SIMCO 2600 H.S. INCLINATION: Vertical
LOCATION: Central interior of gob platform (N19307 E37631)
G
DRAFTING BRB
—9
Civil, Structural, and Geotechnical Engineers, Inc.
222 South Park Avenue
Montrose, Colorado 81401
Phone [phone] Fax [phone]
W
JOB NO. 05- 126 —GEO
J
LU
ED
z
°
Uj
SOIL DESCRIPTION
FIELD & LABORATORY
TEST RESULTS
L" a
LLJ
m
30 0
W
W
°
Rx"
5
g
18
moist to wet, stiff, olive black with some moderate brown,
Sample RX (31
o
eo"
7
sandy CLAY with grovel to clayey GRAVEL with sand
DD =109.7 pcf
ad(30
°
-31.5) [GOB]
MC =12.99
35
0
Q
a
40
GS -6
8
moist, very stiff
, olive black, sandy lean CLAY with grovel
Sample BC '
p ( 41�
Nx"
10
26
to clayey GRAVEL with sand (40 -41.5) [GOB]
DD =104.8 pcf
MC =15.89
16
0°
45
0
50
"��"
8
13
28
moist, compact, black, silty GRAVEL with sand (50 -51.5)
Sample JR (51)
DD =116.3 pcf
X_GS-7
0
15
[GOB]
MC =13.09
55
°
0
°
moist, hard, moderate brown, sandy lean CLAY with gravel
(60 -61.5) [NATIVE SOIL]
0
end of borehole at 60'
10
installed two vibrating wire piezometers:
60
"dR"
18
37
VWP -02 (s /n 82415) to 50'
19
VWP -03 (s /n 82414) to 35'
PAGE
2
OF 2
INVESTiGARON BRB
BOWIE RESOURCES LIMITED
BOWIE NO. 2 GOB PILE
DELTA COUNTY, COLORADO
G
DRAFTING BRB
—9
Civil, Structural, and Geotechnical Engineers, Inc.
222 South Park Avenue
Montrose, Colorado 81401
Phone [phone] Fax [phone]
DA TE 6117105
JOB NO. 05- 126 —GEO