REV06255

• Permit No: C1996083
• IBM Index Class Name: Revision
• Doc Date: 10/18/2002
• Doc Name: Addendum to Geotechnical Data Report - Bruce Park Dam
• From: GEI Consultants, Inc.
• Type & Sequence: TR22
• Media Type: D
• Archive: No

HOLE NO.
GEOLOGICAL LOG OF pRILL HOLE BL_102
GEI Consultants, Inc.
'ROJECT NAME Bruce Park Dam PROJECT N0. 99292 SHEET 1 OF 2
OCATION Lower 1/3 GROUND SURFACE ELEV. (FT) +/_ 8209 TREND PLUNGE 90
Landslide
)ATE STARTED/FINISHED 11-27-01 / 11-28-01 DRILLED BY Heliport Drilling LOGGED BY ERF
;ROUNDWATER EL. DATE OVERBURDEN DEPTH (FT) 20 TOTAL DEPTH (FT) 34.5
NOTES S EE L EGE ND ~ y

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L7 V° U ? a IY ~ V Z -u m 2 ? CO n a
I 11
u

Sharon
Tube at
19.5 - 22.0
fl: 26" Out
of 30-
recovery
~ Estirreleb
failure
surface,
Insl'xaler
to
formation
H-1 4.5 3.6 3.6 10 3 2.4 4 H7 / 80 80

/
/
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/
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u dep pim /
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H-2 5 2.5 2 8 5 1.4 <.1 H7 / 50 40
/
/
/
/
MNfNiGI /
brealu /

H-3 5 2 1 8 4+ 1 .3 H7 / 40 20

/

/
/
/
/
/
/
H-4 2.5 1.3 1.3 7 1 1.3 1.3 H7 / 5? 52

/
/
/
/
/
/
H-5 2.5 1.4 7 4 10 1 1.4 1 4 H7 / 60 60
MMIdMWI /
Mean /

H-6 3 1.7 .6 10 5+ fi .3 Hfi 57 20
H7 /

/

/
I /
ENGINEERING AND GEOLOGICAL
DESCRIPTION AND CLASSIFICATION
very stiff, moist,
4.5-9.5: CLAY- Mostly medium plastic fines, about 30 % fine
grained sand, subangular grains, about 10% fne gravel,
subangular to subrounded grains, stiff, moist, retlish brown with
wlared inGUSions (CL) [GLACIAL DEPOSITS]
8.75-9.5: Increased sand wntect to abou175%,fne to medium
grained. subangular
9.5-13.3: SANDY CLAY -mostly medium plastic fines, about 35
fine to medium ggrained sand. subangular, stiff, moist, red. (CL) -
[GLACIAL DEPOSITS]
13.3-14.5: SILTY SAND - mostly fine to medium grained sand,
subangular grains. less than 15% fines, medium plastic, medium
dense, moist, red (SM) [GLACIAL DEPOSITS].
14.5-17.0: SILTY CLAY -Mostly medium plastic fines, with about
75 % verryy fine grained sand, subangular grains, stiff, moist, redish
brown, (CL) [GLACIAL DEPOSITS].
14.7: Color change from redish brown to green to tan.
t6.0: sandstone cobble, composition similiar to 24.5-26.2
17.0-19.S:SILTY CLAY -Mostly low to medium plastic tines, with
about 30 % fine to medium grained sand, subangular grains. stiff,
moist, (CL) [GLACIAL DEPOSITS]
17.0-17.3: Medium stiff
t 8.75-19.5: Increased sand conten( to about 70%.
19.5-20.0: CLAY -Possible sluff from pushing Sharon Tube at
19.5', mostly fines, medium plasticity, soft, very moist, red, possit
failure material.
20-22.5: INTERBEDED CLAYS AND SANDS - Clay is mostly
medium plastic fines. still. moist. Sand is mostly widely graded
fine to coarse grained sand, subangular grains. medium dense,
moist, red brown, green gray (CL to SC) (GLACIAL DEPOSITS]
21.8: With ~lor change from red io green, grey, increased