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NOTES:
1.
NORTHINGS AND EASTlNGS -'fiE STATE PLANE GRID, NAD'83, TEXAS
SOUTH CENTRAl... ZONE IN u.S.
FEET.
GEOGRAPHIC COORDINATES
(LAT/LONG) -'fiE IN NAD'83.
2.
ElEVA.TlON CONTOURS ARE IN NAW'68 CATUM.
3.
ElEVA.TlON CONTOURS BASED ON INFORMATION PROVIDED BY THE
U.S. ARNY CORPS Of ENGINEERS, GALVESTON DISTRICT. SURVEY
DATE WAS OCTOBER 2008. ELEVATIONS WERE CONVERTED fRON
USA.CE fIIlT TO NAW '88 USING THE FOUDWING CORREl..ATlON:
o NAW .615 - 1.42' NlT.
4.
APPROXIMATE LOCATIONS Of POTENTIAL OBSTRUCTIONS BASED ON
NOM CHNIT 11324. HDR DOES NOT Gl.IARNoITEE ACCURICY OR
CONPLETENESS Of THESE LOCATIONS.
ADDmONAL OBSTRUCTIONS
ARE UKELY TO EXIST.
LEGEND:
@
HISTORICAl... BORING LOCATIONS FRON USACE (1 Sl66)
@
-$-
VlBRACORE LOCATIONS
APPROXIMATE LDCATION Of POTENTIAL OBSTRUCTION
(SEE NOTE 4)
•
VlBRACORE LOCATION fRON RICE UNIVERSITY
BOLIVAR ROADS
GALVESTON ISL»lD
BORING LOCATION
SCALE
o
soo'
1600'
SOUTH JETTY
APFrn.
PARK
TEXAS GENERAL LAND OFFICE
WEST GALVESTON ISLAND
END OF SEAWALL NOURISHMENT
EXHIBIT A -
GALVESTON ANCHORAGE AREA
DATE
4/22/09
FIGURE
EX A
April 20, 2009
Attn.: Mr. Daniel Heilman, P.E.
RETL Job No.: GI09112
BORING NO.
AA-OI
AA-02
AA-03
AA-04
AA-05
AA-06
AA-07
AA-08
AA-09
AA-IO
AA-II
AA-12
AA-13
AA-14
AA-15
AA-16
AA-17
AA-18
AA-19
AA-20
AA-21
AA-22
AA-23
AA-24
AA-25
AA-26
AA-27
AA-28
AA-29
AA-30
ANCHORAGE BASIN SAND SOURCE INVESTIGATION
Anchorage Basin
Galveston Island, Texas
GPS COORDINATES
Northing (Ft.)
Easting (Ft.)
13,697
,653
3,316,595
13,698,267
3,316,725
13,698,824
3,316,993
13,699,436
3,317,401
13,700,293
3,317,717
13,697,692
3,317,372
13,697,972
3,317,029
13,698,396
3,317,267
13,698,183
3,317,733
13,698,835
3,317,844
13,699,483
3,318,163
13,700,304
3,318,392
13,698,028
3,318,672
13,698,747
3,318,773
13,699,240
3,318,962
13,699,918
3,319,141
13,698,322
3,319,855
13,699,496
3,319,957
13,700,406
3,320,164
13,698,014
3,320,905
13,698,958
3,321,049
13,700,020
3,321,179
13,698,522
3,321,488
13,698,450
3,322,163
13,699,095
3,322,545
13,699,510
3,322,110
13,699,532
3,323,082
13,700,599
3,324,100
13,700,790
3,322,827
13,700,597
3,325,148
LABORATORY TESTING PROGRAM
In addition to the field investigation, a laboratory testing program was conducted to determine additional
pertinent engineering characteristics
of the subsurface materials necessary in analyzing the behavior of the
subsurface soils for the proposed project.
30f4
. Geotechnical Engineering
. Construction Materials Testing
PROJECT NAME: Anchorage Basin Sand Source Investigation
CLIENT: HDR Engineering, Inc.
SAMPLE ID.: AA-Ol
DESCRIPTION: Anchorage Basin Borrow Source Area
I
PERCENT SHELL BY WEIGHT (BASED ON #10 SIEVE)
I
-38' to -39' NAVD
29.60
ASTM
% FINER BY WEIGHT AFTER REMOVING SHELL
MESH
-38' to -39' NAVD
#10
100.00
#18
37.43
#35
17.06
#60
10.97
#70
9.17
#100
4.76
#120
2.71
#170
0.95
#200
0.69
STATISTICS (EXCLUDING SHELL)
MEDIAN GRAIN
1.30
SIZE
(mm)
MEAN GRAIN SIZE
0.84
(mm)
SORTING (a)
0.68
*The -#10 material was utilized as the total sample for Grain Size Distribution Curve calculations.
I
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U,S. SIEVE OPENING IN INCHES
I
U.S. SIEVE NUMBERS
I
HYDROMETER
6
4
3.
2 1.5
1
3/4
1/2
3/8
3
6
8
10
14
16
20 30 40
50 60 100
140
200
100
I
I
I
I
I
I
1
I
I
95
90
85
80
75
70
.... 65
\
:t:
Q
60
:;:
w
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>- 55
\
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0::
W
50
u:
z
.... 45
\
a!
z
W
40
W
"-
35
30
25
20
15
.1'---
r.
10
5
'1\
--
0
100
10
.
1
0.1
0.01
0.001
GRAIN SIZE IN MILLIMETERS
o
m
I
COBBLES
~
GRAVEL
SAND
~
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SILT OR CLAY
is
coarse
fine
coarse
medium
fine
~
Specimen 10
Depth
Classification
LL
PL
PI
Cc
Cu
~
'3.
AA-01
(-3~'
to -39' NAVDl
Borrow Area (-38' to -39' NAVD)
1.65 7.06
~
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u
w
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0
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0
z
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Specimen 10
Depth
0100
060
030
010
%Gravel %Sand
%Silt I %Clay
~
~
:::.
AA-01
~
(-38' to -39' NAVD)
2
1.607
0.777
0.228
0.0
0
I
U
l1
'"
0
~
~
~
m
GRAIN SIZE DISTRIBUTION
0
"
~
•.
Rock Engineering & Testing Lab., Inc.
w
6817 Leopard St.
Project: Anchorage Basin Sand Source Investigation
~
~
Corpus Christi, TX 78409
~
Telephone: (361) 883-4555
Location:
Anchorage Basin; Galveston, Texas
<i
Fax: (361) 883-4711
"
Number: G109112
~
~
SHEET1 QF Z
CLIENT:
HDR Engineering, Inc.
I
Rock Engineering & Testing Lab" Inc.
6817 Leopard St.
Corpus Christi, TX 78409
Telephone: (361) 883-4555
Fax: (361) 883-4711
PROJECT:
Anchorage Basin Sand Source Investigation
LOCATION:
Anchorage Basin; Galveston, Texas
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