Hole No.

3ST-25

I

DIVISION

DRILLING LOG

Southwestern

I

SHEET

OF

SHEETS

INSTALLATION

Galv Dist, Eng Div

1. PROJECT

10. SIZE AND 1:YPE Of BIT

o lorado River

11. DATUM FOR ElEVATION SHOWN

(TBM.

or

MSL)

2. LOCATION

(C",dina"", Station)

Sta.

512,1000

North Bank, Offset 10.0 North

3. DRILLING AGENCY

Deot of the Armv. GD

4. HOLE NO.

(As shown on drawing litle

and file number)

S.

NAME OF DRILLER

Black

6. DIRECTION OF HOLE

D

VERTICAL

o

INCLINED

7. THICKNESS OF OVERBURDEN

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH Of HOLE

Corps of Engineers

3S'l'-25

DEG. FROM VERT.

12. MANUFACTURER'S DESIGNATION OF DRILL

13. TOTAL NO. OF OVERBURDEN

SAMPLES TAKEN

• DISTURBED

1

Jar

14. TOTAL NUMBER CORE BOXES

1'5. ELEVATION GROUND WATER

: STARTED

16. DATE HOLE

i

6 Dec

17. ELEVATION TOP Of HOLE

18. TOTAL CORE RECOVERY FOR BORING

19.

SIGNATURE OF INSPECTOR

, UNDISTURBED

1 Cont

: COMPLETED

i

6 Dec 1966

%

22.0

CLASSIFICATION OF MATERIALS

(Des&riplion)

%

CORE

RECOV-

ERY

BOX OR

ROO'''M''A''''''K'''-------I

ELEVATION

lEGEt:,m

SAMPLE

(DI.ming time, water loss, depth of

NO.

weathering, el&., ;f s;gniji&anl)

0

b

d

f

g

0.0

16.~

16.2

19.2

19.5

I

22.J:!

Water

Gray mucky clay v/soft

No resistance

Brown silty sand

BOTTOMED