REV100964

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

GEI Consultants. Inc.
GEOLOGICAL LOG OF DRILL HOLE HOLE NO.
gD-102
PROJECT NAME Bruce Park Dam PROJECT NO. 99292 SHEET 2 OF 3
LOCATION Main Dam GROUND SURFACE ELEV. (FT) -8187 TREND NA PLUNGE 90 Degrees
Right Abutment
DATE STARTED/FINISHED 11/20/00 / 11/22/00 DRILLED BY Agapit0 Drilling, Inc. LOGGED BY JOG
GROUNDWATER EL. NA DATE NA OVERBURDEN DEPTH (FT) 25.0 TOTAL DEPTH (FT) 63.5
I O
NOTES (5 E
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ENGINEERING AND GEOLOGICAL
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~ DESCRIPTION AND CLASSIFICATION
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HO-5.0~0.0~0.0'20 - .- I- -
l_-' 25.0-27.8: INTERBEDDED SILTSTONE AND SILTY
~~'- CL4YSTONE. Mostly non-plastic fines; very thinly bedded, _i
j'- bedding is mostly hodzontal; slightly to moderately weathered; ;
moderately sok to sok; grey and yellow; joints pnmanly parallel to -
~ "'
70
~ bedding, some near vertical, tight to slightly open. slightly rough,

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: i iron stained. -
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_ i; 27.8-63.5: SILTY SANDSTONE. Mostl fne to medium sand
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F:_~ feldspathic antl mafic mineral grains; 20-30 % low to non-plastic ~
j::::: Epee; moderately to well cemented: slightly IO moderately -
j:~:i weathered; thick to massive horizontal betltling with occasional ~
i ' 100 76 cross bedtling: ocgsional qty Uay ciasts up to 2 in.: occasional ',
is-P1
- lighter calWreous nines: motle2tely ham; light brown to Wn. Joints
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are witlely to modeately spaced: most are hodzontal antl spun in j
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::a care barrel. [Mesa Veme Group)
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-- i , -41.5 R More friable: coarse grained.
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=- 70
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53 5-58.5: No rr.,crery. Probable poor cementation. _
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