2008-11-24_PERMIT FILE - C1996083 ‎(12)‎

• Permit No: C1996083
• IBM Index Class Name: Permit File
• Doc Date: 11/24/2008
• Doc Name: Geotechnical Data Report Bruce Park Dam, GEI Consultants, April 2001
• Section_Exhibit Name: Volume X Bruce Park Dam Geotechnical Studies
• Media Type: D
• Archive: No

HOLE NO.
GEOLOGICAL LOG OF DRILL HOLE BDA 02
GEI Cons ultants
Inc.
.
,

PROJECT NAME Bruce Park Dam PROJECT NO. 99292 SHEET 2 OF 3
LOCATION Main Dam GROUND SURFAC E ELEV. (FT) -8187 TREND NA PLUNGE 90 Degrees
Right Abutment
DATE STARTED/FINISHED 11/20/00 / 11/22/00 DRILLED BY Agapito Drilling, Inc. LOGGED BY JDG
GROUNDWATER EL. NA DATE NA OVERBURDEN DEPTH (FT) 25.0 TOTAL DEPTH (FT) 63.5
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NOTES LEGEND
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See previous page for overburden descriptions.
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25.0-27.8: INTERBEDDED SILTSTONE AND SILTY
CLAYSTONE. Mostly non-plastic fines; very thinly bedded, _
bedding is mostly horizontal; slightly to moderately weathered;
moderately soft to soft; gray and yellow, joints primarily parallel to
bedding, some near vertical, tight to slightly open, slightly rough,
iron stained. -
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27.8-63.5: SILTY SANDSTONE. Mostly fine to medium sand
(except mostly very fine sand 27.8-28.2 ft), quartzose with some
feldspathic and mafic mineral grains; 20-30% low to non-plastic
fines; moderately to well cemented; slightly to moderately
weathered; thick to massive horizontal bedding with occasional
cross bedding; occasional gray clay lasts up to 2 in.; occasional
lighter calcareous zones; moderately hard; light brown to tan. Joints
are widely to modeately spaced; most are horizontal and spun in
core barrel. [Mesa Verde Group]

- 41.5 ft: More friable; coarse grained.
- -46 ft Cross bed
- 53.5-58.5: No rec: very. Probable poor cementation