2010-12-17_REVISION - C1981019 ‎(94)‎

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 12/17/2010
• Doc Name: Exhibit 23 Item 1 Geotechnical Report -Collom Temporary Spoil Pile & Pond
• Type & Sequence: PR3
• Media Type: D
• Archive: No

r�
0
* U.
Total Depth: 38.5 ft. Northing: 358,706 ft. Drilling Method: Solid Auger Hole Diam.: 4.5 in.
Top Elevation: 6794.0 ft. Easting: 1, 334,687 ft. Drilling Company: Ager Drilling Rod Diam.: A ROD
Vert. Datum: Station: Drill Rig Equipment: CME 55 1Morooka Gas Hammer Type: Cathead
Horiz. Datum: Offset: Other Comments:
SOIL DESCRIPTION
4=
o
v 4=
PENETRATION RESISTANCE (blows/foot)
Refer to the report text for a proper understanding of the
y
E
a
cc y
A Hammer Wt. & Drop: 140 Ibs / 30 inches
subsurface materials and drilling methods. The stratification lines
a
E
o
indicated below represent the approximate boundaries between
U)
(0
material types, and the transition may be gradual.
0 20 40 60
Medium stiff to hard, brown, slightly sandy to
sandy, silty CLAY, trace fine gravel; dry to moist;
(Alluvium /Colluvium) CL.
S -1 Pocket Penetrometer = 2.5 TSF.
H
5
- Gravelly 7 to 8 feet.
•_
2"
}_}
10
- Gravelly 12 to 17 feet.
-�-
- - F- .
i- o-- o- - -i -i
sH
15
S -3 Pocket Penetrometer = 1.8 TSF.
_
_
S-4 Pocket Penetrometer = 1.0 TSF.
'~
20
.........
.........
.........
22'0
g
... ......
7 7 7 7 7_17"'
Medium dense, light brown and black, slightly
silty, sandy, clayey GRAVEL; moist to wet;
eH
. .
(Alluvium /Colluvium) GC.
25
27.0
_
°
-
Very stiff, red /brown /black, silty CLAY; moist;
(Residuum) CL.
6"
_ __ - -:
-
:_ :.
;._:_
[CLAYSTONE and CARBONACEOUS
30
- }_F- F- F- F- F- F - F -F-
- F- F- F -F -F- -F-
- 'r- F- F- F- F- F -F -F-F
MUDSTONE: very low strength, completely to
32.0
~ ?-
highly weathered (Williams Fork Formation)]
=_
=
7
35
,_.._
.
INTERBEDDED
SILTSTONE /CLAYSTONE /SANDSTONE: very
-_
low to moderate strength; slightly weathered
38.5
r777777
*777777777'
(Williams Fork Formation).
40
SANDSTONE inferred from drill action (auger
refusal) at 38.5 feet
45
'".. " """-'
BOTTOM OF BORING
COMPLETED ON 6/9/2009
%
50
- -� -�-
-
- F- F- F- F- F- F- F -F -F-
.........
........
-
.........
.........
O
LEGEND
O % Fines ( <0.075mm)
* Sample Not Recovered Ground Water Level ATD
0 % Water Content
H Modified California Sampler
Plastic Limit Liquid Limit
Standard Penetration Test
Natural Water Content
Collom Temporary Spoil Fill
KCCC - Colowyo Mine
NOTE
1. Refer to Figures A -1 and A -2 for explanation of symbols, codes, abbreviations and
definitions.
2. The stratification lines represent the approximate boundaries between soil types LOG OF BORING C -101
and the transition may be gradual.
3. The discussion in the text of this report is necessary for a proper understanding of
the nature of the subsurface materials. July 2009 23 -1- 01101 -400
4. Groundwater level, if indicated above, is for the date specified and may vary.
5. USCS designation is based on visual- manual classification and selected lab SHANNON & WILSON, INC FIG. A-3
testing. Geotechnical and EnNronmenlal Consultants
76
66
Exh. 23 -1 -44 Revision Date: 08/05/09
Revision No.: PR -03