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-06-06
BARR Minneapolis, MN 55435-4803
~ Sheet 1 of 4
Project: Monument Dam Location: Paonia, CO client: Mountain Coal Company
Barr Project Number: 06/26-067 ~ STANDARD PENETRATION NATURAL DRY
d TEST DATA DENSITY
w ~ o ~ ~ o N in blows/ft O (pcf) ~1r
o r MATERIAL DESCRIPTION ~ a > 0 10 20 3o ao 1os 115 125
' ~ Z ~
ia a (ASTM D2488) a
~ ~
~ ~ ~ d o SHEAR STRENGTH, ksf Water Content,
Lll ~ C7 c CI) Qp X UC 0 TV jIE WP WN WL
t6
~ VS ~ VSR O
0 Surtace Elev.: 7350.0 1 2 3 4 20 40 60
SILT (ML), with clay, dark brown/brown, dry to moist,
medium dense; a few roots and root fibers
X
13 p13
7345.0 I
7345 5 SILT (ML), no sand to sandy, trace fine- to medium grained 5.0
~
gravel (sandstone), tan/brown/oxidation, moist, medium 13 13
'
dense (
7342.5 t
I
POORLY GRADED SAND (SP), sand medium-grained, tan, 7.5 ::.: '::
~
moist medium dense ulverized sandstone 7341.4 :
. 15 01
LEAN CLAY (CL), brown/tan/oxidation, moist, stiff 8.6
7340.0
7340 10 GRAVEL (GP), broken siltstone, tan/gray, moist 10.0
°
° Q 88 ~~ 88
o D
~
7337.5 X
LEAN CLAY (CL), trace fine- to coarse rained sand, trace 12.5
to with fine- to coarse-grained gravel (sandstone), 15 C~
gray/oxidation, moist, stiff
~
7335 15
7334.2 ~ 8
POORLY GRADED SAND (SP), no to trace silt, sand fine- to 15.8 ::.: :: 38 ~°
medium- rained tan moist dense 7333.2 : ::"~. i
LEAN CLAY (CL), trace fine- to medium-grained gravel 16.8
X i
(shale), gray/oxidation, moist, stiff; fine-grained sand from i
17.5-18.9' and 19.2-19.4' 11 1'1
\
7330 20
7328.8 52 ~~ 52
GRAVEL (GP), broken siltstone, tan/gray, moist 21.2
0

~ ~
7327.5 Q
° ~
SILTY SAND (SM), sand fine-grained, gray/taNoxidation, 22.5 :: ~~
saturated, medium dense; mixed with some lean clay 14

7325 25
11 11
1
1
X ~
1
1
16 o
i 17
7320.0 I
7320 30 on roue ex a e
Completion Depth: 97.0 Remarks:
Date Boring Started: 7110/06
7/11/06
Date B
rin
Com
l
t
d
o
g
p
e
e
:
Logged By: JDG SAMPLE TYPES WATER LEVELS
Drilling Contractor: DA Smith
l
m Auger Cutting 'Shelby Tube ~ While Drilling: 17.3
Dril
ing Method: HSA End of Drilling:
® Split Spoon ~ Rock Core
hrs After Drilling:
The stratification lines represent approximate boundaries. The transition may be gradual.