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

•
:7
s
Total Depth: 49 ft. Northing: 358,027 ft. Drilling Method: Solid Auger Hole Diam.: 4.5 in.
Top Elevation: 6820.0 ft. Easting: 1.334.186 ft. Drilling Company: Alter Drilling Rod Diann.: A ROD
Vert. Datum: Station: Drill Rig Equipment: CME 55/Morooka Gas Hammer Type: Cathead
Horiz. Datum: Offset: - Other Comments:
SOIL DESCRIPTION
Refer to the report text for a proper understanding of the
subsurface materials and drilling methods. The stratification lines
indicated below represent the approximate boundaries between
material types, and the transition may be gradual.
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PENETRATION RESISTANCE (blows/foot)
A Hammer Wt. & Drop: 140 lbs / 30 inches
0 20 40 60
Stiff to hard, brown, slightly sandy, silty CLAY;
dry (moist below 17 feet); (Alluvium /Colluvium)
r_
CL.
tN
5
S -1 to S-4 Pocket Penetrometer = 4.5+ TSF.
zN
10
. }. }. }. }. }. }_ }_ }_ }.
. . } . } _ } _ } _ } _ } ..i_
} . } . }_ }. }_ }_ }_}
sH
15
4"
2 0
22'0
m
Medium stiff to stiff, brown, slightly sandy CLAY;
wet; (Alluvium /Colluvium) CL.
5
51
0
m 25
C
-} f
`'. t _
...
.........
_:.:_:_:
.........
Pocket Penetrometer = 0.8 TSF.
sH
30
.}- }_ } - }_} - }- } - }-
33.0
'~
35
Stiff to medium dense brown, slightly sandy
silty, gravelly CLAY or clayey GRAVEL; wet;
(Alluvium /Colluvium) CL /GC.
37.0
_=
_
;[
INTERBEDDED SILTSTONE AND
SANDSTONE: Inferred from drill action and
=
40
.........
.........
blow counts, no samples recovered (Williams
Fork Formation).
-
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' ' ' -'-
_i•- i- }- t- }- f- } -h -F-
- t-
" -' �_
45
.
.. }.. .
49.0
—
s —*
50
�SQfQ
BOTTOM OF BORING
COMPLETED ON 6/10/2009
".........
.........
.........
.........
.........
.........
.........
0 20 40 60
L EGEND
* Sample Not Recovered V Ground Water Level ATD O % Fines ( <0.075mm)
N Modified California Sampler • % Water Content
3" O.D. Thin - Walled Tube Plastic Limit Liquid Limit
Natural Water Content
Collom Temporary Spoil Fill
KCCC - Colowyo Mine
N OTE S
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 -104
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 -6
testing. Geotechnical and Emironmental Consultants
Exh. 23 -1 -47 Revision Date: 08/05/09
Revision No.: PR -03