,.

"

Professional Service Industries

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

From 10.5 feet below the mudline and extending to a depth of 13.5 feet, a stratum

of sandy clay was encountered. Standard penetration values (N) obtained within these soils

averaged

10 blows per foot. These soils are low in plasticity as indicated by Atterberg limit

test. The tested liquid limit was 34 percent and plasticity index

(PI) was 13. These soils

contain approximately

50 percent sand size particles as indicated by a minus #200 sieve test.

Boring B-3 - The subsurface soil conditions consist

of a stratum of silty clay.

From the mudline

to an approximate depth of 10.5 feet, an upper stratum of silty

clay was encountered. Standard penetration values

(N) obtained within these soils ranged

from zero

(0) to 11 blows per foot. These soils are high in plasticity as indicated by

Atterberg limit tests. Liquid limits averaged

68 percent and plasticity indicies (PI) averaged

29. These soils contain between one

(1)

and eight

(8)

percent sand size particles as

indicated by minus

#200 sieve tests.

Boring

B-4

- The subsurface soil conditions consist

of an upper stratum of clayey

sand and fme sand and a deeper stratum

of silty clay.

From the mudline to an approximate depth

of six (6) feet, an upper stratum of clayey

sand and fine sand

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

soils ranged from zero

(0) to three (3) blows per foot. These soils are generally non-plastic

and contain between one

(1) and 34 silt and clay size particles as indicated by minus #200

sieve tests.

From six

(6) feet below the mudline and extending, a stratum of silty clay was

encountered. Standard penetration values

(N) obtained within these soils ranged from seven

(7) to 12 blows per foot These soils are high in plasticity as indicated by an Atterberg limit

test. The tested liquid limit was

77 percent and plasticity index (PI) was 34. These soils

contain approximately five (5) percent sand size particles as indicated

by minus #200 sieve

tests.

CONTAMINATION

ASSESSMENT

Analytical test results indicate concentrations of Total Petroleum Hydrocarbons

(TPH) in the four (4) composite soil samples collected from soil boring locations B-1, B-2,

B-3, and B-4. The levels

of TPH concentration encountered in the soil samples from soil

boring locations B-1 and B-2 are those typically associated with the biodegradation

of

naturally occurring organic matter and do not represent an adverse environmental concern.

6

:

"

I

I

I

!

---

PROFESS. NAL SERVICE INDUSTRll

RECORD OF SUBSURFACE EXPLORATION

Boring'

B-4

INC.

oject Name:

1995 Marina Dredging Project

Date of Boring:

S't

~

e:

T

-

H

e

ads

-

Cor

l2

u

s Chr'sti

~

,

Texas

Project No

••

DE5CRIPTION

DEPTH

5AMPLE

N

Qu

Qp

5URFACE

r-

-

-

\.later

-

r

-

-

-

I

5

I

-

Mudline

=

6.5 feet below water surface

-

-

-

CLAYEY SAND, gray, wet, very loose.

55-1

YH

---

- FINE SAND, trace clay, gray,

wet, very

loose.

-

55-2

3

I

10

I

55-3

3

r--

r

CLAYEY 5AND, gray,

very moist, very loose.

-

55-4

3

1.25

I-

SILTY

stiff,

CLAY.

(CH)_

trace sand,

grayish

tan, very moist,

-

55-5

10

1.75

• Same as above, firm.

15

I

55-6

7

2_5

r

-

Same as above, stiff.

55-7

10

2.5

r-

SILTY CLAY, some sand, grayish tan, very moist,

r- stiff.

-

55-8

12

1.25

r

Total Depth of Boring

=

18.5 ft below water surface

-

I

20

I

'-

-

-

-

-

-

-

-

I

I

-

-

-

-

-

-

r-

-

I

I

-

-

r-

-

r

-

r

-

November 16, 1995

326

-

55415

Me

REMARK5

-

-

-

-

I

-

-

33.0

-#200=34%

-

28.2

-#200=1%

-.

-#200=26%

I

23.7

Non Plastic

-

31_7

-

-#20D=95%

-

36_3

LL=77X

PI=34

-

32_5

I

-

31.5

-#200=95%

-

31.8

-

-

I

-

-

-

-

I

-

-

-

-

I

-

-

-

-

---

PSI/Corpus Christi

385-5P196-0024

Page 11 of 17

~,

./: 11160-04

PURGEABLE AROMATICS

::lient 10:

B-4 Camp.

Matrix: Soil

LOW LEVEL

\nalyte

Results

1!ui!§

Method

MOL/OF

3enzene

<10

ug/kg

SW 8020

1011

Extraction Date:

"oluene

<10

ug/kg

SW 8020

1011

NA

Ethylbenzene

<10

ug/kg

SW 8020

1011

Analysis Date:

Total

Xylenes'

<10

ug/kg

SW 8020

10/1

11/28/95

rotal VOAs

<10

ug/kg

SW 8020

-1-

Analyst: WH

.vITBE

<10

ug/kg

SW 8020

1011

!\nalyte

Results

Units

Method

Analysis Date

Analyst

MOL

Total Recoverable

Petroleum Hydrocarbons

33.0

mg/kg

EPA 418_1

11/20/95

RM

10.0

METALS' ANALYSIS

Analyte

Results

Units

Method

Analysis Date

Analyst

Total Arsenic

<0.6

mg/kg

SW 7060

11/22/95

MC

~

11

Barium

<12

mg/kg.

SW 7080

11/27/95

JS

" __ dl Cadmium

<0.6

mg/kg

SW 7130

11/20/95

JS

Total Chromium

4.00

mg/kg

SW 7190

11/20/95

JS

Total Lead

6.00

mg/kg

SW 7420

11/21/95

JS

Total Mercury

0.02

.mg/kg

SW 7471

11/27/95

JS

Total Selenium

<0.6

mg/kg

SW 7740

11/22/95

.MC

Total Silver

<1.00

mg/kg

SW 7760

11/22/95

JS

---

PSl/Corpus Christi

385-5P196-0024

Page 12 of 17

.A. .: 111 60-04

BASE/NEUTRAL AND ACID EXTRACT A8LES 8Y GC/MS

:lient 10:

8-4 Comp.

Matrix: Soil

Inalyte

Results

Units

Method

MOL/OF

lASE NEUTRAL EXTRACTABLES

J-Nitrosodimethylamine

<330

ug/kg

SW 8270

330/1

lis (2-chloroethyl) ether

<330

ug/kg

SW 8270

330/1

, ,3-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

Extraction Date:

: A-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11120/95

3enzyl alcohol

<330

ug/kg

SW 8270

330/1

Analysis Date:

1,2-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11122/95

3is(2-chloroisopropyl) ether

<330

ug/kg

SW 8270

330/1

Analyst: SP

'J-Nitroso di-n-propyl amine

<330

ug/kg

SW 8270

330/1

1exachloroethane

<330

ug/kg

SW 8270

330/1

\litrobenzene

<330

ug/kg

SW 8270

330/1

Isophorone

<330

ug/kg

SW 8270

330/1

3is (2-choloroethoxy) methane

<330

ug/kg

SW 8270

330/1

1

,204-Trichlorobenzene

<330

ug/kg

SW 8270

330/1

'Japhthalene

<330

ug/kg

SW 8270

330/1

4-Chloroaniline

<330

ug/kg

SW 8270

330/1

:-Jexachlorobutadiene

<330

ug/kg

SW 8270

330/1

2-Methylnaphthalene

<330

ug/kg

SW 8270

330/1

Hexachlorocyclopentadiene

<330

ug/kg

SW 8270

330/1

<

~

loronaphthalene

<800

ug/kg

SW 8270

800/1

2. ..

,croaniline

<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

SW8270

330/1

4-Chloro phenyl phenyl ether

<330

ug/kg

SW 8270

330/1

4-Nitroaniline

<800

ug/kg

SW 8270

80011

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

33011

4-8romo 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

, 8utylbenzyl phthalate

<330

ug/kg

SW 8270

330/1

Senzo (a) anthracene

<330

ug/kg

SW 8270

330/1

Chrysene

<330

ug/kg

SW 8270

33011

Sis

(2-ethylhexyl) phthalate

<330

ug/kg

SW 8270

330/1

., ,'-Dichlorobenzedine

<330

ug/kg

SW 8270

330/1

.1-0ctylphthalate

<330

ug/kg

SW 8270

330/1

Senzo- (b)

fluor~nthene

<330

ug/kg

SW 8270

33011

L"'~;l

(continued)

,,--

---

PSI/Corpus Christi

385-5P196-0024

Page 13 of 17

-,",

II:

111 60-04

BASE/NEUTRAL AND ACID EXTRACTABLES BY GC/MS (cant,)

:lient 10:

B-4 Camp,

Matrix: Soil

.\nalyte

Results

Units

Method

MOL/OF

1ASE

NEUTRAL EXTRACTABLES

3enzo (k) fluoranthene

<330

ug/kg

SW 8270

330/1

3enzo- (a) pyrene

<330

ug/kg

SW 8270

330/1

ndo (l,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,il 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

2,4-0imethylphenol

<330

ug/kg

SW 8270

330/1

Benzoic acid

<330

ug/kg

SW 8270

330/1

2,4-0ichlorophenol

<330

ug/kg

SW 8270

330/1

4-Chloro-3-methylphenol

<330

ug/kg

SW8270

330/1

S-Trichlorophenol

<330

ug/kg

SW 8270

330/1

::,~,5-

Trichlorophenol

<330

ug/kg

SW 8270

330/1

2,4-0initrophenol

<800

ug/kg

SW 8270

800/1

4-Nitrophenol

<800

ug/kg

SW 8270

800/1

4,6-0initro-2-methyl phenol

<800

ug/kg

SW 8270

800/1

Pentachlorophenol

<800

ug/kg

SW 8270

800/1

PESTICIDES

Alpha-BHC

<330

ug/kg

SW 8270

33011

Beta-BHC

<330

ug/kg

SW 8270

33011

Gamma-BHC

<330

ug/kg

SW 8270

330/1

Delta-BHC

<330

ug/kg

SW 8270

33011

Heptachlor

<330

ug/kg

SW 8270

330/1

Aldrin

<330

ug/kg

SW 8270

33011

Heptachlor epoxide

<330

ug/kg

SW 8270

33011

Endosulfan I

<330

ug/kg

SW 8270

330/1

Dieldrin

<330

ug/kg

SW 8270

33011

4,4'-00E

<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'-000

<330

ug/kg

SW 8270

330/1

Endrin aldehyde

<330

ug/kg

SW 8270

330/1

Endosulfansulfate

<330

ug/kg

SW 8270

330/1

. 4,4'-DOT

<330

ug/kg.

SW 8270

330/1

"--1rin Ketone

<330

ug/kg

SW 8270

330/1

thoxychlor

<330

ug/kg

SW 8270

330/1

l"~;l

I:!!.--

---

PROFESS. NAL SERVICE INDUSTRll

RECORD OF SUBSURFACE EXPLORATION

Boring'

B-4

INC.

oject Name:

1995 Marina Dredging Project

Date of Boring:

S't

~

e:

T

-

H

e

ads

-

Cor

l2

u

s Chr'sti

~

,

Texas

Project No

••

DE5CRIPTION

DEPTH

5AMPLE

N

Qu

Qp

5URFACE

r-

-

-

\.later

-

r

-

-

-

I

5

I

-

Mudline

=

6.5 feet below water surface

-

-

-

CLAYEY SAND, gray, wet, very loose.

55-1

YH

---

- FINE SAND, trace clay, gray,

wet, very

loose.

-

55-2

3

I

10

I

55-3

3

r--

r

CLAYEY 5AND, gray,

very moist, very loose.

-

55-4

3

1.25

I-

SILTY

stiff,

CLAY.

(CH)_

trace sand,

grayish

tan, very moist,

-

55-5

10

1.75

• Same as above, firm.

15

I

55-6

7

2_5

r

-

Same as above, stiff.

55-7

10

2.5

r-

SILTY CLAY, some sand, grayish tan, very moist,

r- stiff.

-

55-8

12

1.25

r

Total Depth of Boring

=

18.5 ft below water surface

-

I

20

I

'-

-

-

-

-

-

-

-

I

I

-

-

-

-

-

-

r-

-

I

I

-

-

r-

-

r

-

r

-

November 16, 1995

326

-

55415

Me

REMARK5

-

-

-

-

I

-

-

33.0

-#200=34%

-

28.2

-#200=1%

-.

-#200=26%

I

23.7

Non Plastic

-

31_7

-

-#20D=95%

-

36_3

LL=77X

PI=34

-

32_5

I

-

31.5

-#200=95%

-

31.8

-

-

I

-

-

-

-

I

-

-

-

-

I

-

-

-

-

---

PSI/Corpus Christi

385-5P196-0024

Page 11 of 17

~,

./: 11160-04

PURGEABLE AROMATICS

::lient 10:

B-4 Camp.

Matrix: Soil

LOW LEVEL

\nalyte

Results

1!ui!§

Method

MOL/OF

3enzene

<10

ug/kg

SW 8020

1011

Extraction Date:

"oluene

<10

ug/kg

SW 8020

1011

NA

Ethylbenzene

<10

ug/kg

SW 8020

1011

Analysis Date:

Total

Xylenes'

<10

ug/kg

SW 8020

10/1

11/28/95

rotal VOAs

<10

ug/kg

SW 8020

-1-

Analyst: WH

.vITBE

<10

ug/kg

SW 8020

1011

!\nalyte

Results

Units

Method

Analysis Date

Analyst

MOL

Total Recoverable

Petroleum Hydrocarbons

33.0

mg/kg

EPA 418_1

11/20/95

RM

10.0

METALS' ANALYSIS

Analyte

Results

Units

Method

Analysis Date

Analyst

Total Arsenic

<0.6

mg/kg

SW 7060

11/22/95

MC

~

11

Barium

<12

mg/kg.

SW 7080

11/27/95

JS

" __ dl Cadmium

<0.6

mg/kg

SW 7130

11/20/95

JS

Total Chromium

4.00

mg/kg

SW 7190

11/20/95

JS

Total Lead

6.00

mg/kg

SW 7420

11/21/95

JS

Total Mercury

0.02

.mg/kg

SW 7471

11/27/95

JS

Total Selenium

<0.6

mg/kg

SW 7740

11/22/95

.MC

Total Silver

<1.00

mg/kg

SW 7760

11/22/95

JS

---

PSl/Corpus Christi

385-5P196-0024

Page 12 of 17

.A. .: 111 60-04

BASE/NEUTRAL AND ACID EXTRACT A8LES 8Y GC/MS

:lient 10:

8-4 Comp.

Matrix: Soil

Inalyte

Results

Units

Method

MOL/OF

lASE NEUTRAL EXTRACTABLES

J-Nitrosodimethylamine

<330

ug/kg

SW 8270

330/1

lis (2-chloroethyl) ether

<330

ug/kg

SW 8270

330/1

, ,3-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

Extraction Date:

: A-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11120/95

3enzyl alcohol

<330

ug/kg

SW 8270

330/1

Analysis Date:

1,2-Dichlorobenzene

<330

ug/kg

SW 8270

330/1

11122/95

3is(2-chloroisopropyl) ether

<330

ug/kg

SW 8270

330/1

Analyst: SP

'J-Nitroso di-n-propyl amine

<330

ug/kg

SW 8270

330/1

1exachloroethane

<330

ug/kg

SW 8270

330/1

\litrobenzene

<330

ug/kg

SW 8270

330/1

Isophorone

<330

ug/kg

SW 8270

330/1

3is (2-choloroethoxy) methane

<330

ug/kg

SW 8270

330/1

1

,204-Trichlorobenzene

<330

ug/kg

SW 8270

330/1

'Japhthalene

<330

ug/kg

SW 8270

330/1

4-Chloroaniline

<330

ug/kg

SW 8270

330/1

:-Jexachlorobutadiene

<330

ug/kg

SW 8270

330/1

2-Methylnaphthalene

<330

ug/kg

SW 8270

330/1

Hexachlorocyclopentadiene

<330

ug/kg

SW 8270

330/1

<

~

loronaphthalene

<800

ug/kg