LOG OF BORING B-2

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CLIENT:

HDRIShiner

Moseley and Associates, Inc.

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Rock Engineering & Testing Lab., Inc.

PROJECT:

New East Jetty: Mouth of Colorado River

4910 Neptune st.

LOCATION:

Matagorda County, TX

corpus Christi, TX 78405

Telephone:

Fax: 361 8834711

361 8834555

NUMBER:

G207487

UA II .t"'l DRILLED:

07/24/07

-

07/24/07

FIELD DATA

LABORATORY DATA

DRILLING METHOD(S):

Hollow Stem Auger

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GROUNDWATER INFORMATION:

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SURFACEFI I

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<=:rRIPTION OF ::i I KA rUM

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WAlER DEPTH-12.5'

5

10

SS

N=8

26

NP NP

NP

13

SilTY SAND, brown and gray, wet, loose. (SM)

..

S-1

15

SS

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c

39

-

1--

c--

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c--

---

36

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S-2

N= 3

CLAYEY

SAND, with numerous shells, greenish gray, saturated,

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soft.

SS

N= 2

34

Same as above, very soft

20

S-3

SS

N= 2

33

47

16

31

45

Same as above, with clay layers. (Se)

25

S-4

SS

N=2

33

SANDY FAT CLAY, brown, very moist, very soft.

30

S-5

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SS

N=8

22

47

16

31

59

SANDY lEAN CLAY, gray, very moist, stiff. (el)

35

S-6

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SH

P= 4.25

20

38

15

23

111

3.7

68

Same as above, gray and brown, very stiff. (el)

40

S-7

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SS

POORLY GRADED SAND, with silt shell fragments, grayish

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S-8

IN=7

18

NP

NP

NP

7

brown,

we~,_loose.

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Total Depth 01

uv,,"."

40' t;elow waler level

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i- N _ STANDARD PENETRATION TEST RESISTANCE

REMARKS:

Boring location was determined by RETL

Boring operations were pertormed by a

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P - POCKET PENETROMETER RESISTANCE

drilling sub-contractor to RETL.

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T - POCKET TORVANE SHEAR STRENGTH

Coordinates: N 28 35 25.2, W 95 59 03.9

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August 27, 2007

HDR

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Shiner Moseley and Associates, Inc.

RETL Job No.: G207487

PROPOSED NEW EAST JETTY

Mouth of the Colorado River

Matagorda County, Texas

The soil conditions encountered at the boring locations have been summarized and soil

properties including plasticity, strength, grain size and classification are provided

in Tables 3

through

7. The following terms and acronyms are used in these tables:

EL

-8 to -32

-32 to -42

-42 to -47

-47 to -67

-67 to -75

EL

-12to-16

-16to-27

-27 to -32

-32 to -42

-42 to -45

EL

=

Approximate depth in feet referenced to water surface elevation.

LL

=

Liquid Limit, %

PI

= Plasticity Index

C

=

Soil Cohesion, psf (undrained)

~

=

Angle of Internal Friction, deg. (undrained)

Ye

=

Effective soil unit weight, pef

-#200

=

% silt and clay size particles

N

= Standard Penetration Value range

P = Hand Penetrometer range, tsf

NP

=

Non plastic material

TABLE 3: SOIL PROFILE FOR BORINGS B-1 AND B-3

Description

LL

PI

C

4>

y.

-#200

Silty

SANDI

NP

NP

0

29

55

4-16

Poorly Graded SAND

Fat CLAY

51-59

33-38

1500

0

60

72-78

Clayey SAND

33

17

1500

0

60

31-40