GEOTECHNICAL CORE DRILLING, SOIL SAMPLING, AND LABORATORY TESTING

USACE, Galveston District W912HY‐13‐D‐0001

Government & Industry in Harmony with the Environment

1.0

Introduction

Task Order DY08, Core Drilling, Soil Sampling, and Laboratory Testing for the Port Arthur

Resident Office Shoreline Stabilization project, Port Arthur, Texas, was awarded to Quaternary

Resource Investigations, LLC (QRI) on November 19, 2013 (Notice to Proceed (NTP) received on

November 29, 2013). The primary purpose of this Task Order was to obtain geotechnical

information for shoreline stabilization at the Port Arthur Resident Office, Jefferson County,

Texas. A total of 5 borings, numbered 13‐1001 through 13‐1005, were drilled to depths of 80

and 100 feet as shown on

Table 1

below.

2.0

Borings

Below is a table summarizing the 5 borings drilled under Task Order DY08. The table includes

Boring Number, Investigation Feature, Depth (ft), and a description of unusual subsurface

conditions or difficulties in drilling that were encountered (if any). Boring Summary Sheets and

Field boring logs (

Appendix A

) should be referenced for information concerning each boring.

Table 1

Boring

Investigation Feature

Depth (ft)

Conditions / Difficulties Encountered

13‐1001

East Bank SNWW PARO

100

See boring log

13‐1002

East Bank SNWW PARO

80

See boring log

13‐1003

East Bank SNWW PARO

100

See boring log

13‐1004

East Bank SNWW PARO

80

See boring log

13‐1005

East Bank SNWW PARO

100

See boring log

Final gINT Boring Logs are included in

(

Appendix B

).

3.0

Test data

As per the Table of Required Services, test assignments were provided by the USACE POC as

listed in Table 2. All tests were performed by QRI’s contract laboratory, Terracon Consultants,

Inc., on portions of the samples that were considered representative of the predominant

material composition of the overall sample. The laboratory recorded on the final summary

sheets the results of unit dry weight tests, moisture content tests, and visual classifications

incidental to performing unconfined compression tests, triaxial tests (including UU and CU

tests), and other tests. Results of moisture content testing and visual classifications incidental

to performing moisture content, unit dry weight, Atterberg limits, and sieve analyses, were also

included on the final test summary sheets provided by the laboratory. A complete set of

---

 

BORING ID:

BORING TYPE:

DEPTH:

ELEVATION:

X (US SURVEY FT):

3574637.07

Y (US SURVEY FT):

13897757.98

DEPTH TO WATER:

13.8'

7.47'

BORING SUMMARY SHEET

PORT ARTHUR RESIDENT OFFICE

13-1001

Continuous Sampling

100'

---

7.4651'

---

5

---

5

---

---

5

---

---

---

---

 

3/8 4 10 40 100 200 gravel sand silt clay

sieve 200

C Wc γdC Wc γd C φ Wc C φ c̕ φ̕Wc γd

ft tsf tsf bl/ft % % % %%%%%% % % % % % %pcfksf % pcf ksf%pcf ksf

º

% ksf

º

ksf

º

%pcf

0-2

2.5

25

2-4

2.7

49

21

28

CL*

25

4-6

1.75

28

6-8

1.7

33

85

8-10

1.0

25 20 5 10098 96 95

85

2 13

85 CL-ML

36 88

0.43 36 88

CL**

SUMMARY TABLE OF LABORATORY TEST DATA

Project Name: Port Arthur Resident Office

Client: QRI

Terracon Project # : 92135321

Boring

Depth

Field Tests

Atterberg Limits

Grain Size Analysis

USCS

Symbol

PP

TV

SPTn

LL

PL

Symbol

Symbol

Symbol

Symbol

Wc

γd

Strenght Tests

Soil Particle Content

Unconfined Compression

UU Triaxial Test

Direct Shear

CU Triaxial Test

PI

% by weight passing sieve

10-12

1.1

34

87

0.28

34

87

CH**

12-14

1.4

60

17

43

CH*

29

97

0.34

10

0.24

22

29

97

CH**

14-16

1.75

27

16-18

2.25

46

18

28

CL*

24

18-20

2.25

23

20-22

1.8

24

102

0.87

24

102

CL**

22-24

1.8

25

24-26

24

26-28

18

10099 99 99 36

1 63

36 SM*

24

0.18 33 24

SM**

28-30

1.4

8

30

30-32

2.4

41

85

32-34

1.7

48 19 29

100100

99

0 1

99 CL

32 90

0.65 32 90

CL**

34-36

2.0

33

36-38

2.0

55

23

32

CH*

39

38-40

1.5

42

40-42

1.1

51 19 32

100100

98

0 2

98 CH

39 82

0.58 39 82

CH**

42-44

1.75

56

44-46

1.5

60

23

37

100

100

0

0

100

CH

40

82

0.73

40

82

CH**

46-48

1.8

45

48-50

1.5

45

76

1001

50-52

1.6

85

25

60

CH*

49

52-54

1.9

57

54-56

1.8

101

33

68

CH*

53

70

56-58

1.9

57

58-60

1.6

66

20

46

CH*

38

84

1.16

38

84

CH**

60-62

1.8

34

62-64

1.75

57 22 35 10099 90 85

76

1 23

76 CH

37

64-66

1.7

45

66-68

1.5

54

68

0.71

54

68

CH**

68-70

2.1

48

70-72

2.0

50

73

72-74

1.7

105 28 77

100 99 99

98

0 2

98 CH

47 76

0.89 47 76

CH**

74-76

2.2

46

76-78

2.25

49

78-80

2.1

77

25

52

CH*

45

80-82

3.5

57

82-84

2.0

40

84-86

2.2

41

86-88

1.8

79 24 55

100100

95

0 5

95 CH

35 86

1.53 35 86

CH**

88-90

2 0

32

13-B1

88 90

2.0

32

90-92

1.8

28

97

92-94

1.7

24

104

0.58

24

104

CL-ML**

94-96

32

100

99

11

0

89

11

SP-SM*

21

96-98

98-100

9

21

1

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POINT

EASTING

(X)

NORTH ING

(

Y)

ELEV.(Z)

BORING

100

1

3

574637

.

0

7

138977

57

.

98

7.47

13-

1

001 SURVEYED

100

2

357

4

687

.

1

3

1

3897866

.

27

7.5

2

13

-

1

002 S

URVEYED

1003

35

7474

2

.

03

13897973.59

6.49

13-1003

S

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1004

35

7478

5

.

9

7

13898080.74

7

.

63

13

-

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S

URVEYED

1005

3

574844.09

13898188

.

35

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PROJECT BENCHMARK:

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