2009-03-02_PERMIT FILE - C1980004 ‎(5)‎

• Permit No: C1980004
• IBM Index Class Name: Permit File
• Doc Date: 3/2/2009
• Section_Exhibit Name: Appendix R Stability Evaluation of Proposed Gob Wastepile
• Media Type: D
• Archive: No

BOREHOLE LOG -BOREHOLE #2 (B~#02)
BOREHOLE LOCATION: Noriheasf gob footprint DRILLER: Scott McCracken
DRILL RIG: Slmco 28@0 HS
SURFACE ELEVATION:
DRILL STEM: 4" Solid~fam continuous fliglrt auger
NOTES: Approximately 39.43982 N, 108.77663 W SAMPLER: 2" LD. Cahfomia spld spoon _
w
~
~ z ~ FIELD & LABORATORY
~ € = i SUBSURFACE DESCRIPTION TEST RESULTS
~'. (J Z ~ ~ ~
P W ~
3 N N y ~ y
C
0 :
p,
y~¢ (a-ML)
LL=23 PL=17 P1=6
;~ GF-3.4%
5 ~6 4 moist loose, moderate yellowish brown slTfy SAND, little SF=4L4%
;: ~ ~ p~ 4 9 clay F200=55.2%
MC=155%
't ~^ Q~Z
moist; /Dose, moderate yellowish brown sr76y SAND, OD=98.9 pct
MC=155%
10 '~` ~ CS7 3 B some day, trace grove!
.{
5
boulder ®13'
~ l~+)
f5 ~ 4
1D
moist, loose, moderate yellowish brown sDty SAND, NoN-PLASnc
~ 7
6%
DS3 g trace grovel
trace day .
5%
SF==49
' , .
F200=429%
•
•~ '• ~
20 ~. ~s 4 B moist loose, moderate yellowish brown sAby SAND, little t
-• .. 3 /
t DD=106.5 pc
3 race grove
day, MC=1115,

IZ$ <~

" ~.
?a

30
.; e.
.,. -•

D
7

B
moist loose, moderate lowish brown sr7ty SAND,
~ ~

pct
OS
v+ .i ~ ~4 4 trace day, trace gra-el ~
MC--~
. ~
:~
35 f `i "
:~ ',
,~ ..; ;:
• 5 moderate yellowish brown silty
dense
tel
d
/
f
40 _• i ~~ 17 ,
y
era
, mo
mo
s
• GSl1 6 SAND, trace day, trace grovel

i '~ rocky be%w 44.0'
45 ~ ~•
24 slightly weathered, extremely weak SANDSTONE and
50 •~• o- p 4 SILTSTONE fn shoe (possrbly weathered beafrodc)
no groundwater immediately after dnTling
no groundwater on 9/27/07
end of boreho% ®t51.0'
155 ~ SPT N vvlues not corrected for energy or depth• stratigraphic transitions are approximate and are blfened from cuttings dr dnTlers comments I

BOREHOLE /NVESncanoN eRB McCLANE CANYON M/NE ~GEOTECHI
LOG CH
DRAFTING
GOB PILE
and Geatechnical Engineers, Inc.
SWdurel
Civ~7
2 /7EL0 DATE 926 07 ,
,
222 Scum Peck Avenue
M°n°°~. caor~ Br°°1
OF 6 ./nR No 07-334-GEO GARFlELD COUNTY, COLORADO Plxxre [phone] Fax [phone]