LOG OF BORING B-12
STARVATION COVE MARSH RESTORATION (TUBE EXTENSION)
GALVESTON, TEXAS
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TYPE OF BORING: AIR BOAT MOUNTED RIG
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COORDINATE
APPROXIMATE
COORDINATE
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SURFACE
OR
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EASTING:
NORTHING:
ELEVATION:
3265100.36
13654428.6
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feet
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2 LATITUDE:
29° 13' 55.12
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LONGITUDE:
94° 56' 00.96
W
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SOIL DESCRIPTION
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CLAYEY SAND (SC). VERY LOOSE, BROWN
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DEPTH OF BORING:
5
FEET
DATE DRILLED:
3/26/10
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NOTES:
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Geotechnical Consulting Services
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Houston. Texas 77007
PSI Proiect No.: 286-271
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SHEAR STRENGTH
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PL PI
0.0 0.5 1.0 1.5 2.0 2.5
WOH
20
25
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WOH
22
WOH
30
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GROUND WATER DURING DRILLING (FT):
0_5
FT ABOVE MUDLINE
GROUND WATER
DELAYED
GROUND WATER (FT):
PLATE NO: 14 (Page 1 of 1)
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KEY TO TERMS AND SYMBOLS USED ON LOGS
SOIL TYPE
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GRAvEL
SILT
LEAN CLAY FAT CLAY
PEAT
MODIFIERS
II
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ITIJ
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II
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000
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000
+.::+.::+.:
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STONE
GRAvELy
SANDY
SILTY
CLAYEY
MISC.
(SEE TEXT ON LOG)
UNIFIED SOIL CLASSIFICATION SYSTEM - ASTM D
2487
70
60
----
50
40
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30
20
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10
20
30
40
DEGREE OF PLASTICITY OF
COHESIVE SOILS
50
60
Liquid Limit
DEGREE OF
PLASTICITY
PLASTICITY
INDEX SWELL POTENTIAL
NONE OR SLIGHT
o
T04
NONE
LOW
4 TO 20
LOW
MEDIUM
20 TO 30
MEDIUM
HIGH
30 TO 40
HIGH
VERY HIGH
> 40
VERY
HIGH
ABBREVIATIONS
70
60
90
100
110
MOISTURE CONDITION
COHESIVE SOILS
DESCRIPTION
Absence of moisture,
dusty, dry to touch
Damp but no visible
water
Visible free water
CONDITION
DRY
MOIST
WET
HP - HAND PENETROMETER
UC - UNCONFINED COMPRESSION TEST
TV -
TORVANE
UU - UNCONSOLIDATED UNDRAINED TRIAXIAL
MV
- MINIATURE VANE
CU - CONSOLIDATED UNDRAINED
NOTE: PLOT INDICATES SHEAR STRENGTH AS OBTAINED BY ABOVE TESTS
SAMPLER TYPE
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NO
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AUGER
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SHELBY
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SPLIT
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SAMPLE
SAMPLE
TUBE
SPOON
~
NO
ROCK
W
2" SHELBY
II
TXDOT
H
RECOVERY
CORE
TUBE
CONE
CONSISTENCY
OF COHESIVE SOILS
SHEAR STRENGTH
CONSISTENCY
IN
TONSlFT
2
VERY SOFT
o
TO 0.125
SOFT
0.125 TO 0.25
FIRM
0.25 TO 0.5
STIFF
0.5 TO 1.0
VERY STIFF
1.0 TO 2.0
HARD
>
2.0 OR 2.0+
RELATIVE DENSITY - GRANULAR SOILS
CONSISTE;-.JCY
NNAlUE (BLOWS/FOOT)
VERY LOOSE
OT04
LOOSE
5 T09
MEDIUM DENSE
10 TO 29
DENSE
30 TO 50
VERY DENSE
> 50 OR 50+
CONSISTENCY OF COHESIVE SOILS
AFTER TERZAGHI
(1948)
CONSISTENCY
VERY SOFT
SOFT
FIRM
STIFF
VERY STIFF
HARD
N-VALUE (BLOws/FOOT)
<2
2 T04
4 T06
6 TO 15
15
TO 30
> 30
FINAL GROUND WATER LEVEL
INITIAL GROUND
WATER
LEVEL
CLASSIFICATION
OF GRANULAR SOILS
U.S. STANDARD SIEVE SIZE(S)
40
6"
3"
3/4"
4
10
200
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BOULDERS
,
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COBBLES
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COARSE I FINE COARSEI MEDIUM I FINE I
SILT
OR CLAY
I CLAY
152
76.2
19.1
Geotechnical Consultmg Services
Houston, Texas.
4.76
2.0
0.42
0.074
GRAIN SIZE IN MM
0.002
PLATE 23
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