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
4700 West 77th Street LOG OF BORING SB-06-02
BARR Minneapolis, MN 55435-4803
~ Sheet 3 of 4
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 ~ c ~ ~ Q N in blows/ft o0 (pcf) it
`~ MATERIAL DESCRIPTION ~ n > 0 10 20 so ao 1os 11s 12s
m n ~ Z ~
. (ASTM D2488) a ~
d

~
m
~
~
SHEAR STRENGTH, ksf
Water Content,
u~ ~ ~ Vl Qp X UC ~ TV 3IE Wp Wry W~
1° VS ~ VSR O
60 1 2 3 4 20 40 60

'VW piezometer installed at depth of 60.7 feet using the 7278 7 27 ¢ 7
full -routed method PZ-06-02 serial # 86375 61.5 I
SANDY SILT (ML), with clay, gray with oxidation, saturated, .

dense I
65 7275.2 ~ I
7275 LEAN CLAY (CL), trace fine- to medium-grained sand to 65.0
sandy, trace coarse-grained sand, trace fine-grained gravel 33 x,33
`
(sandstone), brown/taNoxidation, saturated, very stiff to hard ( 2 .9
1
1
1
1
1
70 1
7270
41 41

7 7265.2
7265 5 LEAN CLAY (CL), Vacs to with fine- to medium-grained 75.0
sand, trace coarse-grained sand, trace fine- to 19 19
medium-grained gravel (sandstone),
browNblack/tan/oxidation, saturated, very stiff; fine- to /
medium-grained sand, trace silt, gray, saturated from 76.2 to /
76.6' /
I
1
7260.2 /
7260 80 LEAN CLAY (CL), trace to with fine- to medium-grained 80.0
sand, trace coarse-grained sand, trace fine-grained gravel 11 11
(sandstone), browNdark brown/tan/red/oxidation, saturated, 2 .2
stiff; pieces of gravel that look like red brick from 81-82' 1
1
1

7255.2 I
I
I
7255 85 GRAVELLY SAND (SP), with silt, with Gay, fine- to 85.0 p:. ,
coarse-grained, red/tan, saturated, medium dense; clasts
°~ ~ 16 01
very angular, looks similar to exposed talus/colluvium on ~ ~
right (north) abutment o.::= ~ \
~`

C ..::
~~
°.. {~

90 Continued Next Pa e
Completion Depth: 93.3 Remarks:
Date Boring Started: 7/6!06
Date Borin
leted: 7/7/06
Com
g
p
Logged By: JDG SAMPLE TYPES WATER LEVELS
Drilling Contractor: DA Smith
illi
h
D
M
S
m Auger Cutting 'Shelby Tube ~ While Drilling: 22.5
-
r
ng
et
od: H
A End of Drilling:
® Split Spoon ~ Rock Core
hrs After Drilling:
the stratification lines represent approximate boundaries. The transition may be gradual.