Four Corner - Texas Water Development Board

LOG OF SOIL BORING
Project Name: Richmond Treatment Plant
Boring No.: 8-8 Date: July 16, 1992
Depth of water encountered during drilling: 35 feet
Groundwater at - after -
Project No. 92-160G
Elevation: See text
Depth to caving: 15 feet
ELEVATION
DEPTH
SOIL SYMBOLS
SAMPLER SYMBOLS SOIL DESCRIPTION
·200
%PASS
DO
PCF
SHEAR STRENGTH. TSF ·
e • .t. I
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
AND FIELD TEST DATA MOISTURE 0 CONTENT. % i
ff------'--------t----------------+---+-_, PLASTIC LIMIT 1----j~· LIQUID LIMIT'
•o
- ······· ·················· ·············· ···········
Very stiff to hard gray CLAY
w/ roots to 2'
10 2Q 30 40 !lJ 60 70 so 90
-s
brown below 4'
I
.
w/ silty clay seams at 7'
slickensided w/ silt below 8'
106
~10
- ··················· ·················· ·····
Very stiff brown SILTY CLAY
I
1- 15
~20
clay layer 1 8'-20'
slickensided w/ calcareous nodules
below 18'
\
\
\
1-25
:
~30
~
- ················· ········· ........... .
Medium dense gray and tan CLAYEY
SAND w/ sand pockets to 30'
91
j I
I
f---+---++-_:1 +--+-t---t-t--+---t--1,
1-35
0
T
Shear Types: • =Hand Penet. • = Torvane .... = Unconf. Comp. • = UU Tr1ax1al
See Plate 1 for boring location. Plate 9
~
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