2007-08-10_PERMIT FILE - C1980007 ‎(4)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/10/2007
• Section_Exhibit Name: Exhibit 76 Report Spring 2007 Part 2
• Media Type: D
• Archive: No

Barr Engineering Company
470o west 77th street LOG OF BORING ~ SB-06-03
BARB Minneapolis, MN 55435-4803
~ Sheet 1 of 3
Project: Monument Dam Location: Paonia, CO client: Mountain Coal Company
Barr Project Number: 06/26-067 ~ STANDARD PENETRATION NATURAL DRY
m TEST DATA DENSITY
w ~ o ~ ~ o N in blows/ft O (pcf) it
w MATERIAL DESCRIPTION ~ a > o ~o zo so ao tos ~~s ~zs
~ ~ Z ~
(ASTM D2488) a
` ~
y ~ ` ~ ~ o SHEAR STRENGTH, ksf Water Content,
LLl ~ ~ E W Qr X UC ~ TV 31f WP WN w~

0
Surtace Elev.: 7340.2 ~6 VS A VSR O
1 2 3 4
20 40 60
LEAN CLAY (CL), with silt, with fine- to medium-grained
sand, trace fine- to medium-grained gravel (sandstone and
shale), brown/tan/oxidation, dry to moist, medium
5 p5

5 ________________ ________ 7335.2 I
7335 LEAN CLAY (CL), with silt, trace to with fine- to 5.0
medium-grained sand, trace fine- to medium-grained gravel q ~4
(sandstone and shale), brown/tan/oxidation, moist, medium;
some dark brown from 10-12', stiff to very stiff from 12.5-17', I
dark brown and soft from 13.8-14.5' I X
q ~4
'

10 I
7330
5 ~5
`
\
X \

" 12 (012
2
-thick layer of silty fine-grained sand, trace coarse-grained ~
sand, trace fine-grained gravel \
15
7325 \
19 19

X ~

~ 1 33
5 ~}
l 1 .1

20 7320.2 \
7320 LEAN CLAY (CL), trace to with fine-grained sand, trace 20.0 \
medium- to coarse-grained sand, trace fine- to 10 10
medium-grained gravel (sandstone),
brown/gray/tan/oxidation, moist, stiff; mixed with fine-grained 7317 7
' ` --
sand trace fine rained ravel from 20.0-21.2
22 5
SILTY SAND (SM), sand fine-grained, trace coarse-grained 100
sand, trace fine-grained gravel, brown, moist 100 »
7315.2 ~.
7315 25 LEAN CLAY (CL), trace to with fine- to medium-grained 25.0
sand, trace coarse-grained sand, trace fine- to 14
coarse-grained gravel (sandstone and shale),
brown/gray/oxidation, moist, stiff to very stiff; dark 1
brown/black from 29.1-29.5' I X
16 ~1
7310.2 \
30 Continued Next Pa e
Completion Depth: 78.5 Remarks:
Date Boring Started: 7/7/06
Date Borin
Com
leted: 7/9/06
g
p
Logged By: JDG SAMPLE TYPES WATER LEVELS
Drilling Contractor: DA Smith
Drilli
M
th
d
HSA
m Auger Cutting 'Shelby Tube SZ While Drilling: 35
-
ng
e
o
: End of Drilling:
® Split Spoon ~ Rock Core
hrs After Drilling:
The stratification lines represent approximate boundaries. The transition may be gradual.