-===

Pro'fessional Service Industries

=======================

It

is to be noted that, whereas the test borings are drilled and sampled by experienced

drillers, it is sometimes difficult to record changes in stratification within narrow limits.

In the absence

of foreign substances, it is also difficult to distinguish between discolored

soils and clean soil fill.

Soil Conditions

Boring B-1 - The subsurface soil conditions consist

of an upper stratum of fine sand,

an intermediate stratum of clayey sand, and a deeper stratum of silty clay.

From the mudline

to an approximate depth of six (6) feet, an upper stratum of

medium sand with shells was encountered. Standard penetration values (N) obtained within

these soils ranged from one (1) to four (4) blows per foot. These soils are non-plastic and

contain between 12 and

23 percent silt and clay size particles as indicated by minus #200

sieve tests.

From six (6) feet below the mudline, to a depth

of 7.5 feet, an intermediate stratum

of clayey sand was encountered. A standard penetration value (N) obtained within these

soils

was two (2) blows per foot. These soils contain approximately 42 percent silt and clay

size particles as indicated by minus

#200 sieve tests.

From 7.5 feet below the mudline and extending

to a depth of nine (9) feet, a stratum

of silty clay was encountered. A standard penetration value (N) obtained within these soils

was four (4) blows per foot. These soils are high in plasticity as indicated by an Atterberg

limit test. The tested liquid limit was 53 percent and plasticity index

(PI) was 31. These

soils contain approximately 22 percent sand size particles as indicated by a minus

#200 sieve

test.

Boring B-2 - The subsurface soil conditions consist

of an upper stratum of fme sand,

intermediate strata

of clayey sand and silty clay, and a deeper stratum of sandy clay.

From the mudline

to

an approximate depth of six (6) feet, an upper stratum of fine

sand was encountered. Standard penetration values (N) obtained within these soils ranged

from zero (0) to one (1) blow per foot. These soils are non-plastic and contain between five

(5) and 14 percent silt and clay size particles as indicated by minus #200 sieve tests.

From six (6) feet below the mudline, to a depth

of 10.5 feet, intermediate strata of

clayey sand and silty clay were encountered. Standard penetration values (N) obtained

within these soils ranged from one (1)

to

11 blows per foot. These soils are low in

plasticity as indicated by Atterberg limit tests. Liquid limits ranged from 24 to 27 percent

and plasticity indicies

(PI) ranged from seven (7) to 12.

5

,.

,.

---

PROFESS: NAL SERVICE INDUSTRII

RECORD OF SUBSURFACE EXPLORATION

Boring:

B-1

INC.

.,ject Name:

1995 Marina Dredging Project

Date of Boring:

.t

s~

e:

T-Hea

d

s - Cor2us

Chr~st~f

Texas

Proj ect No.:

DESCRIPTION

DEPTH

SAMPLE

N

Qu

Qp

SURFACE

c-

-

-

Water

-

-

-

-

-

I

5

I

-

-

-

-

-

Mudline

=

8.5 feet below water surface

-

I-

MEDIUM SAND, some cLay,

with shells, gray, wet,

-

very loose.

S5.1

2

I

10

I

I-

-

S5-2

1

I-

-

Same as above,

Loose.

55-3

4

I-

MEDIUM SAND, with clay, with shells, gray, wet,

--

very loose.

-

55-4

1

II

15

I

. CLAYEY SAND, gray, wet, very loose •

S5-5

2

- SILTY CLAY, with sand, gray, very moist,

firm,

(tH)

-

55-6

4

1.0

-

Total Depth of Boring

=

17.5 ft below water surface

-

-

-

I

20

I

-

-

-

-

-

-

-

-

I

I

-

-

-

-

-

-

-

-

I

I

-

-

-

-

-

I-

-

November 16. 1995

326-55415

Me

REMARKS

-

-

-

-

I

-

-

-

-.

35.2

-#200~12"

I

34.0

-

-

34.6

-#200~18"

-

34.4

-#200~23"

-

32.9

-#200~42%

I

-

-#200~78"

32_6

LL=53%

-

PI=31

-

-

I

-

-

-

-

I

-

-

-

-

I

-

-

-

-

---

_A

J:

111 60-01

:lient 10: B-1 Compo

.:l.nalyte

3enzene

roluene

::thylbenzene

Total Xylenes

rotal VOAs

MTBE

il..nalyte

Total Recoverable

Petroleum Hydrocarbons

Results

<10

<10

<10

<10

<10

<10

Results

17.0

PURGEABLE AROMATICS

Units

Method

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

Units

Method

mg/kg

EPA 418.1

MOL/OF

1011

10/1

1011

1011

-/-

10/1

Analysis Data

11/20/95

PSI/Corpus Christi

3B5-5P196-0024

Page 2 of 17

Matrix:

Soil

LOW LEVEL

Extraction Date:

NA

Analysis Date:

11/28/95

Analyst: WH

Analyst

MOL

RM

10.0

I

I

I

---

PSI/Corpus Christi

385-5P196-0024

Page 3 of 17

_A ...

,f:

111 60-01

BASE/NEUTRAL ANO ACID EXTRACTABLES BY GC/MS

:lient 10:

B-1 Comp,

Matrix: Soil

.l.nalyte

Results

Units

Method ..

MOL/OF

1ASE NEUTRAL

EXTRACTABLES

N-Nitrosodimethylamine

<330

ug/kg

SW 8270

330/1

qis

(2-chloroethyl) ether

<330

ug/kg

SW 8270

330/1

1,3-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

Extraction Date:

1,4-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11/20/95

Benzyl alcohol

<330

ug/kg

SW 8270

330/1

Analysis Date:

1,2-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11/22/95

3is (2-chloroisopropyl) ether

<330

ug/kg

SW 8270

330/1

Analyst:

SP

N-Nitroso di-n-propyl amine

<330

ug/kg

SW 8270

330/1

'-Iexachloroethane

<330

ug/kg

SW 8270

330/1

'IIitrobenzene

<330

ug/kg

SW 8270

330/1

Isophorone

<330

ug/kg

SW 8270

330/1

Bis (2-choloroethoxy) methane

<330

ug/kg

SW B270

330/1

.'

1,2,4-Trichlorobenzene

<330

ug/kg

SW 8270

330/1

Naphthalene

<330

ug/kg

SW 8270

330/1

4-Chloroaniline

<330

ug/kg

SW 8270

330/1

Hexachlorobutadiene

<330

ug/kg

SW 8270

330/1

2-Methylnaphthalene

<330

ug/kg

SW 8270

330/1

Hexachlorocyclopentadiene

<330

ug/kg

SW 8270

330/1

2

!oronaphthalene

<800

ug/kg

SW 8270

800/1

2-I'IIftroaniline

<330

ug/kg

SW 8270

330/1

Dimethylphthalate

<330

ug/kg

SW 8270

330/1

2,4-Dinitrotoluene

<330

ug/kg

SW 8270

330/1

Acenaphthylene

<330

ug/kg

SW 8270

330/1

3-Nitroaniline

<800

ug/kg

SW 8270

80011

Acenaphthene

<330

ug/kg

SW 8270

330/1

Dibenzofuran

<330

ug/kg

SW 8270

330/1

2,6-Dinitrotoluene

<330

ug/kg

SW 8270

330/1

Fluorene

<330

ug/kg

SW 8270

330/1

4-Chloro phenyl phenyl ether

<330

ug/kg

SW 8270

330/1

4-Nitroaniline

<800

ug/kg

SW 8270

800/1

. Diethyl phthalate

<330

ug/kg

SW 8270

330/1

Di-n-Butylphthalate

<330

ug/kg . SW 8270

330/1

. N-Nitrolsodiphenylamine

<330

ug/kg

SW 8270

330/1

4-Bromo phenyl phenyl ether

<330

ug/kg

SW 8270

330/1

Hexachlorobenzene

<330

ug/kg

SW 8270

330/1

. Phenanthrene

<330

ug/kg

SW 8270

330/1

Anthracene

<330

ug/kg

SW 8270

330/1

Fluoranthene

<330

ug/kg

SW 8270

330/1

. Pyrene

<330

ug/kg

SW 8270

330/1

Butylbenzyl phthalate

<330

ug/kg

SW 8270

330/1

Benzo (al anthracene

<330

ug/kg

SW 8270

330/1

Chrysene

<330

ug/kg

SW 8270

330/1

Bis (2-ethylhexyl) phthalate

< 33()'

ug/kg.

SW 8270

330/1

~

.,. -Dichlorobenzedine

<330

ug/kg

SW 8270

330/1

: l-Octylphthalate

<330

ug/kg

SW 8270

330/1

Benzo- (bl fluoranthene

<330

ug/kg

SW 8270

330/1

(continuedl

L ...

~il

';

~-

.

---

PSI/Corpus Christi

385-5P196-0024

Page 4 of 17

~I

I: 11160-01

BASE/NEUTRAL AND ACID EXTRACTABLES BY GC/MS (cont.)

Client ID:

B-1 Compo

Matrix: Soil

l.nalyte

Results

Units

Method

MOL/OF

SASE

NEUTRAL EXTRACTABLES

3enzo (k) fluoranthene

<330

ug/kg

SW 8270

330/1

Senzo- (a) pyrene

<330

ug/kg

SW 8270 330/1

ndo (1,2,3-cd) pyrene

<330

ug/kg

SW 8270

330/1

:Jibenzo (a,h) anthracene

<330

ug/kg

SW 8270

330/1

Senzo (g,h,i)

perylene

<330

ug/kg

SW 8270 330/1

AC/D EXTRACTABLES

?henol

<330

ug/kg

SW 8270

330/1

2-Chlorophenol

<330

ug/kg

SW 8270

330/1

2-Methylphenol

<330

ug/kg

SW 8270

330/1

4-Methylphenol

<330

ug/kg

SW 8270

330/1

2-Nitrophenol

<330

ug/kg

SW 8270

330/1

2,4-Dimethylphenol

<330

ug/kg

SW 8270

330/1

Benzoic acid

<330

ug/kg

SW 8270

330/1

2,4-Dichlorophenol

<330

ug/kg

SW 8270

330/1

4-Chloro-3-methylphenol

<330

ug/kg

SW 8270

330/1

? .

6- Trichlorophenol

<330

ug/kg

SW B270

33011

:..

.5-Trichlorophenol

<330

ug/kg

SW 8270

330/1

2,4-Dinitrophenol

<800

ug/kg

SW 8270

800/1

4-Nitrophenol

<800

ug/kg

SW 8270

800/1

4,6-Dinitro-2-methyl phenol

<800

ug/kg

SW 8270

800/1

Pentachlorophenol

<800

ug/kg

SW 8270

800/1

PESTICIDES

Alpha-SHC

<330

ug/kg

SW 8270

330/1

Seta-SHC

<330

ug/kg

SW 8270

330/1

Gamma-SHC

<330

ug/kg

SW 8270

330/1

Delta-SHC

<330

ug/kg

SW 8270

330/1

Heptachlor

<330

ug/kg

SW 8270

33011

Aldrin

<330

ug/kg

SW 8270

330/1

Heptachlor epoxide

<330

ug/kg

SW 8270

330/1

Endosulfan I

<330

ug/kg

SW 8270

330/1

Dieldrin

<330

ug/kg

SW 8270

330/1

4,4'-DDE

<330

ug/kg

SW 8270

330/1

Endrin

<330

ug/kg

SW 8270

330/1

Endosulfan II

<330

ug/kg

SW 8270

330/1

, 4,4'-DDD

<330

ug/kg

SW 8270

330/1

Endrin aldehyde

<330

ug/kg

SW 8270

330/1

Endosulfan. sulfate

<330

ug/kg

SW 8270

330/1

4,4'-DDT

<330

ug/kg

SW 8270

330/1

F.,drin Ketone

<330

ug/kg

SW 8270

330/1

thoxychlor

<330

ug/kg

SW 8270

330/1

l"'~;l

I:!._.

---

PROFESS: NAL SERVICE INDUSTRII

RECORD OF SUBSURFACE EXPLORATION

Boring:

B-1

INC.

.,ject Name:

1995 Marina Dredging Project

Date of Boring:

.t

s~

e:

T-Hea

d

s - Cor2us

Chr~st~f

Texas

Proj ect No.:

DESCRIPTION

DEPTH

SAMPLE

N

Qu

Qp

SURFACE

c-

-

-

Water

-

-

-

-

-

I

5

I

-

-

-

-

-

Mudline

=

8.5 feet below water surface

-

I-

MEDIUM SAND, some cLay,

with shells, gray, wet,

-

very loose.

S5.1

2

I

10

I

I-

-

S5-2

1

I-

-

Same as above,

Loose.

55-3

4

I-

MEDIUM SAND, with clay, with shells, gray, wet,

--

very loose.

-

55-4

1

II

15

I

. CLAYEY SAND, gray, wet, very loose •

S5-5

2

- SILTY CLAY, with sand, gray, very moist,

firm,

(tH)

-

55-6

4

1.0

-

Total Depth of Boring

=

17.5 ft below water surface

-

-

-

I

20

I

-

-

-

-

-

-

-

-

I

I

-

-

-

-

-

-

-

-

I

I

-

-

-

-

-

I-

-

November 16. 1995

326-55415

Me

REMARKS

-

-

-

-

I

-

-

-

-.

35.2

-#200~12"

I

34.0

-

-

34.6

-#200~18"

-

34.4

-#200~23"

-

32.9

-#200~42%

I

-

-#200~78"

32_6

LL=53%

-

PI=31

-

-

I

-

-

-

-

I

-

-

-

-

I

-

-

-

-

---

_A

J:

111 60-01

:lient 10: B-1 Compo

.:l.nalyte

3enzene

roluene

::thylbenzene

Total Xylenes

rotal VOAs

MTBE

il..nalyte

Total Recoverable

Petroleum Hydrocarbons

Results

<10

<10

<10

<10

<10

<10

Results

17.0

PURGEABLE AROMATICS

Units

Method

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

ug/kg

SW 8020

Units

Method

mg/kg

EPA 418.1

MOL/OF

1011

10/1

1011

1011

-/-

10/1

Analysis Data

11/20/95

PSI/Corpus Christi

3B5-5P196-0024

Page 2 of 17

Matrix:

Soil

LOW LEVEL

Extraction Date:

NA

Analysis Date:

11/28/95

Analyst: WH

Analyst

MOL

RM

10.0

I

I

I

---

PSI/Corpus Christi

385-5P196-0024

Page 3 of 17

_A ...

,f:

111 60-01

BASE/NEUTRAL ANO ACID EXTRACTABLES BY GC/MS

:lient 10:

B-1 Comp,

Matrix: Soil

.l.nalyte

Results

Units

Method ..

MOL/OF

1ASE NEUTRAL

EXTRACTABLES

N-Nitrosodimethylamine

<330

ug/kg

SW 8270

330/1

qis

(2-chloroethyl) ether

<330

ug/kg

SW 8270

330/1

1,3-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

Extraction Date:

1,4-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11/20/95

Benzyl alcohol

<330

ug/kg

SW 8270

330/1

Analysis Date:

1,2-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11/22/95

3is (2-chloroisopropyl) ether

<330

ug/kg

SW 8270

330/1

Analyst:

SP

N-Nitroso di-n-propyl amine

<330

ug/kg

SW 8270

330/1

'-Iexachloroethane

<330

ug/kg

SW 8270

330/1

'IIitrobenzene

<330

ug/kg

SW 8270

330/1

Isophorone

<330

ug/kg

SW 8270

330/1

Bis (2-choloroethoxy) methane

<330

ug/kg

SW B270

330/1

.'

1,2,4-Trichlorobenzene

<330

ug/kg

SW 8270

330/1

Naphthalene

<330

ug/kg

SW 8270

330/1

4-Chloroaniline

<330

ug/kg

SW 8270

330/1

Hexachlorobutadiene

<330

ug/kg

SW 8270

330/1

2-Methylnaphthalene

<330

ug/kg

SW 8270

330/1

Hexachlorocyclopentadiene

<330

ug/kg

SW 8270

330/1

2

!oronaphthalene

<800

ug/kg

SW 8270

800/1

2-I'IIftroaniline

<330

ug/kg

SW 8270

330/1

Dimethylphthalate

<330

ug/kg

SW 8270

330/1

2,4-Dinitrotoluene

<330

ug/kg

SW 8270

330/1

Acenaphthylene

<330

ug/kg

SW 8270

330/1

3-Nitroaniline

<800

ug/kg

SW 8270

80011

Acenaphthene

<330

ug/kg

SW 8270