drilling company/drilling equipment...

ELEV

ATI

ON

(ft)

90

85

80

75

70

65

60

55

35.6

31.3

37.5

35.6

35.0

96

2.9

2.7

1.2

4.9

5.6

60

58

60

85

-

78

-

80

41

42

Trace very fine sand

END OF BORING AT 141 FEET

NOTES:

Hand augered upper 5 feet to avoid damage to utilities.Montoring well was installed on 5/11/2011. See wellconstruction diagram for G-109.

"N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches

*Number of blows required to drive the Crandall Sampler12 inches using a 300 pound hammer falling 18 inches

**Photo Ionization Detector used for OVA readings

Downhole Test: PMT = Pressuremeter

SAM

PLE

LOC

.

Sta 442+30, Lt 45 feetHOLE DIAMETER4-7/8 inches

GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSGround-water level measured at 28½ feet and 41 feet below the ground surfacein shallow and deep monitoring wells, respectively on 7/29/2011. See last pageof this boring for details.

BOREHOLE LOCATION

DRILLING COMPANY/DRILLING EQUIPMENT

212 feet

G-109(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

125

130

135

140

145

150

155

160

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: ARPrepared/Date: JF 6/21/2011Checked/Date: LT/PE 9/26/2011

Project No.: 4953-10-1561 Figure: A-2.9dMTA Westside Subway Extension

Los Angeles, California

ELEV

ATI

ON

(ft)

210

205

200

195

190

185

180

175

16.3

25.7

23.8

14.2

10.5

13.7

30.6

11

ML

ML

CH

SW-SM

CH

8.5

7.2

5.2

5.9

4.1

6.8

5.4

15

18

36

25

113

-

96

-

107

-

90

15

29

48

7½-inch thick Asphalt Concrete over 5-inch thick PortlandCement ConcreteFILL [Af]SANDY SILT - moist, olive, fine sand, some clay, slightlyporous

Thin layer of Silty SandLAKEWOOD FORMATION [Qlw]SILT - stiff, moist, light brown, slightly porous, some clay

FAT CLAY with SAND - stiff, moist, light brown, fine tomedium sand

WELL GRADED SAND with SILT - medium dense, moist,olive, fine to medium-grained, some coarse sand, trace gravel(up to 1/4 inch in size)

Becomes olive yellow

Becomes dense, more silt, some gravel (up to 1/4 inch in size)

FAT CLAY with SAND - very stiff, moist, light brown andblueish gray

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/28/2011 - 5/2/2011GROUND-WATER READINGSDrilling mud bailed on 4/29/2011. Ground-water level measured at 31 feet belowthe ground surface on 5/2/2011.

BOREHOLE LOCATION


212 feet

G-110

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: ARPrepared/Date: YN 8/9/2011Checked/Date: JAG/PE 9/28/2011

Project No.: 4953-10-1561

(CONTINUED ON FOLLOWING FIGURE)

Figure: A-2.10aMTA Westside Subway Extension


ELEV

ATI

ON

(ft)

170

165

160

155

150

145

140

135

33.0

24.8

29.8

13.7

18.6

15.1

22.3

47.3

8

9

98

CL

SM

ML

SP-SM

7.2

6.8

6.1

6.1

3.8

4.7

4.5

5.2

25

63

57

60

-

99

-

-

-

110

-

72

24

23

52

76

Becomes blueish gray

SAN PEDRO FORMATION [Qsp]SANDY LEAN CLAY - very stiff, moist, light olive gray, fineto medium sand

SILTY SAND - moist, blueish gray, fine to medium-grained

SILT - moist, bluish gray, trace fine sand, some clay

POORLY GRADED SAND with SILT - very dense, olivegray, fine to medium-grained

Becomes dense, trace shell fragments

FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, greenish gray, trace fine sand,weakly cemented

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


212 feet

G-110(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561


Figure: A-2.10bMTA Westside Subway Extension


PMT

PMT

ELEV

ATI

ON

(ft)

130

125

120

115

110

105

100

95

45.8

48.6

34.7

38.8

45.7

33.0

37.4

40.5

95

99

98

99

2.9

3.7

1.4

7.6

6.3

6.3

6.1

1.5

34

50

46

51

-

69

-

79

-

86

-

79

62

37

38

31

Becomes grayish green

(½-inch thick cemented layer)

(3 feet thick very hard cemented layer)

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


212 feet

G-110(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561


Figure: A-2.10cMTA Westside Subway Extension


PMT

Tun

nel

ELEV

ATI

ON

(ft)

90

85

80

75

70

65

60

55

37.0

38.0

41.8

991.4

5.6

8.5

69

40

48

80

82

78END OF BORING AT 131 FEET

NOTES:

Hand augered upper 5 feet to avoid damage to utilites.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.





SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


212 feet

G-110(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

125

130

135

140

145

150

155

160

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

190

185

180

175

170

165

160

13.6

-

18.7

20.7

25.0

28.4

16.4

52

SM

ML

GW

ML

SM

CL

ML

SP

ML

30

15.6

7.9

10.2

9.5

10.4

25

37

16

37

103

-

107

-

93

-

106

27

16

35

6-inch thick Asphalt Concrete over 8-inch thick PortlandCement Concrete and 4-inch thick Base CourseFILL [Af]SILTY SAND - moist, brown, fine to medium-grained, tracecoarseLAKEWOOD FORMATION [Qlw]SANDY SILT - very stilff, moist, olive yellow to brown, finesand, trace calcium carbonate nodules

WELL GRADED GRAVEL - medium dense, moist, gravel (upto 3 inches in size)(Sample not recovered)

SANDY SILT - hard, light brown, fine sand, trace gravel (upto 3 inches in size)

SILTY SAND - moist, light grayish brown to light olive,fine-grained

SANDY LEAN CLAY - very stiff, moist, light brown, fine tomedium sand

Trace mica

SANDY SILT - stiff, moist, light brown, fine sand

Becomes light olive, trace iron oxide stains

Becomes hard, olive gray

POORLY GRADED SAND - dense, wet, light olive, fine tomedium-grained, trace coarse sand, trace gravel (up to ½ inchin size)

SAN PEDRO FORMATION [Qsp]SILT - very stiff, moist, greenish gray, some clay

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/12/2011 and 5/13/2011GROUND-WATER READINGSDrilling mud bailed on 5/12/2011. Ground-water level measured at 28 feet belowground surface on 5/13/2011.

BOREHOLE LOCATION


195 feet

G-111

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: ARPrepared/Date: YN 6/21/2011Checked/Date: LT/PE 9/26/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

150

145

140

135

130

125

120

52.0

25.2

21.3

14.3

15.7

23.3

21.7

28.3

58

9

15

CL

SP-SM

SM

>3000

>3000

3.0

3.6

>3000

3.9

>3000

3.6

27

54

80

62

-

92

-

110

-

97

-

90

28

32

47

53

(Sample not recovered)

More fine sand

SANDY LEAN CLAY - hard, very moist, greenish gray, finesand, occasional medium

POORLY GRADED SAND with SILT - dense, wet, light gray,fine to medium-grained, trace coarse, slight hydrogen sulfideodor

Becomes greenish gray

Becomes very dense, fine-grained, occasional medium

Trace fine gravel

SILTY SAND - very dense, wet, gray, fine-grained, somemedium and coarse, occasional gravel (up to 3/8 inch in size),trace mica

Slight hydrogen sulfide odor

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


195 feet

G-111(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

110

105

100

95

90

85

80

19.3

17.5

59.8

39.4

46.8

34.8

93

98

ML>2550

>2550

>3000

>3000

>3000

>1550

26

34

35

-

86

-

79

-

83

38

40

35

SILT - hard, wet, dark gray, trace fine sand, occasionalmedium, trace clayFERNANDO FORMATION [Tf]SILTSTONE - very stiff to hard, moist, dark olive gray to darkgreenish gray, occasional fine sand, interbeded with sandlayers, trace calcium carbonate nodules, weakly cemented

Becomes dark greenish gray, trace fine sand


NOTES:

Hand augered upper 5 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.




SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


195 feet

G-111(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561 Figure: A-2.11cMTA Westside Subway Extension


ELEV

ATI

ON

(ft)

195

190

185

180

175

170

165

15.9

16.1

20.8

29.5

25.2

19.2

SM

CL

SM

CL

ML

SMCL

SM

0.0

0.0

0.0

0.0

0.0

0.0

15

7

18

101

-

102

-

97

-

35

22

36

6-inch thick Asphalt Concrete over 10-inch thick PortlandCement Concrete, No Base CourseFILL [Af]SILTY SAND - moist, light brown, fine-grained, trace mediumto coarseQUATERNARY YOUNGER ALUVIUM [Qal]SANDY LEAN CLAY - stiff, moist, light brown and traceolive yellow, medium to coarse sand, trace fine gravel (up to1/2 inch in size)

Becomes brown

LAKEWOOD FORMATION [Qlw]SILTY SAND - dense, moist, olive brown, fine-grained, tracemedium, trace fine gravel (up to 1/2 inch in size)

Becomes medium to coarse-grained, more gravel

LEAN CLAY with SAND - very stiff, moist, light gray to lightolive, fine to coarse sand, trace fine gravel, some rootlets

Trace calcium carbonate nodules and iron oxide stains

SANDY SILT - moist, light brown

SILTY SAND - wet, light brownSANDY LEAN CLAY - moist, light brown, trace gravel (up to½ inch in size), trace calcium carbonate nodules

SILTY SAND - medium dense, moist, light olive brown, fineto medium-grained, some coarse, trace calcium carbonatenodules, trace iron oxide stains

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/11/2011 and 5/12/2011GROUND-WATER READINGSDrilling mud bailed on 5/11/2011. Ground-water level measured at 18 feet belowthe ground surface on 5/12/2011.

BOREHOLE LOCATION


200 feet

G-112

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: HTYPrepared/Date: YN 9/21/2011Checked/Date: LT/PE 9/26/2011

Project No.: 4953-10-1561




PMT

Wils

hire

/ L

a B

rea

Stat

ion

ELEV

ATI

ON

(ft)

155

150

145

140

135

130

125

21.0

20.0

27.2

24.3

23.9

20.5

47

8

9

CH

ML

SP-SM

0.0

0.0

0.3

0.0

0.0

0.0

11

12

27

105

-

97

-

100

-

68

27

76

Trace gravel (up to 3/8 inch in size)

SAN PEDRO FORMATION [Qsp]FAT CLAY - hard, olive, some fine sand, trace medium tocoarse, trace fine gravel (up to 3/4 inch in size), trace mica

SANDY SILT - stiff, moist, greeenish gray, fine sand, tracemedium, trace calcium carbonate nodules

Becomes very stiff, more sand, some clay

POORLY GRADED SAND with SILT - medium dense, wet,gray, fine to medium-grained

Becomes very dense, fine-grained, some medium

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


200 feet

G-112(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




PMT

PMT

Wils

hire

/ L

a B

rea

Stat

ion

ELEV

ATI

ON

(ft)

115

110

105

100

95

90

85

24.3

25.8

28.4

37.6

42.8

45.8

36.7

48.0

23

95

SM

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

25

12

13

12

99

-

92

-

76

-

84

-

72

43

55

57

Gravel (up to 3/4 inch in size)

SILTY SAND - very dense, wet, gray, fine-grained, somemedium, occasional gravel

FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, olive gray, trace fine sand, weaklycemented

Small pockets of fine sand, gray

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


200 feet

G-112(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

75

70

65

60

55

50

45

57.90.0 1661END OF BORING AT 121 FEET

NOTES:






SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


200 feet

G-112(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

125

130

135

140

145

150

155

160

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

195

190

185

180

175

170

165

160

20.3

23.1

23.6

14.6

14.5

25.7

31.6

63

31

SM

SM

CL

CL-ML

CL

SM

CL

ML

21

31

33

-

99

-

-

-

106

-

11

35

30

1½-inch thick Asphalt Concrete over 12-inch thick PortlandCement Concrete and 2-inch thick Base CourseFILL [Af]SILTY SAND - moist, brown, some gravel

LAKEWOOD FORMATION [Qlw]SILTY SAND - moist, reddish brown

SANDY LEAN CLAY - stiff, moist, brown, trace fine sand

SILTY CLAY with SAND - stiff, moist, brown, fine sand

LEAN CLAY - stiff, moist, brown, trace fine sand, tracecalcium carbonate nodules

SILTY SAND - medium dense, moist, light brown to olive,medium to coarse-grained, trace fine sand

LEAN CLAY with SAND - hard, moist, fine to coarse sand,trace calcium carbonate nodules

Layers of Silty Clay, very stiff, olive, trace fine sand

SILT with SAND - very stiff, moist, greenish gray, fine sand

SAN PEDRO FORMATION [Qsp]

SAM

PLE

LOC

.

Sta 465+60, Lt 15 feetHOLE DIAMETER4-¼ inches

GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

TRI County / CME 75DRILLING METHODRotary WashDATES DRILLED5/23/2011, 5/24/2011, and6/2/2011GROUND-WATER READINGSGround-water level measured at 19 feet below the ground surface on 5/24/2011.

BOREHOLE LOCATION


198 feet

G-113

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: MHPrepared/Date: YN 6/21/2011Checked/Date: HP/PE 9/19/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

155

150

145

140

135

130

125

120

34.7

24.0

26.1

24.3

-

15.9

-

-

92

84

CH

CL-ML

SP-SM

SW

SM

33

49

97

50/1"

-

-

102

-

-

-

-

-

38

50

50/3"

50/5"

FAT CLAY - very stiff, moist, bluish gray, trace calciumcarbonate nodules

With sand, hard, moist, greenish gray, fine sand

SILTY CLAY - hard, moist, greenish gray, trace sand

POORLY GRADED SAND with SILT - dense, moist, greenishgray, fine to medium-grained

Becomes very dense

WELL GRADED SAND - very dense, moist to wet, greenishgray, fine to coarse-grained, trace fine gravel, trace silt

SILTY SAND - very dense, moist, greenish gray, fine-grained

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


198 feet

G-113(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




Wils

hire

/ L

a B

rea

Stat

ion

ELEV

ATI

ON

(ft)

115

110

105

100

95

90

85

80

17.7

47.5

34.1

37.0

41.8

39

99

50/1"

67

70

112

-

85

-

81

33

86

Becomes dark greenish gray, trace coarse gravel

FERNANDO FORMATION [Tf]CLAYEY SILTSTONE - hard, moist, dark greenish gray

SILTSTONE - hard, moist, dark greenish gray to dark brown


NOTES:

Hand augered upper 10 feet to avoid damage to utilites.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.


*Number of blows required to drive the Crandall Sampler 12inches using a 140 pound automatic hammer falling 30 inches


SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


198 feet

G-113(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

195

190

185

180

175

170

165

160

20.7

25.6

24.6

37.7

21.1

24.4

12.4 22

CL

SM

SM

CL

ML

SM

CH

CL-ML

SM

CL

SC

0.0

0.0

0.0

0.0

12

20

20

29

101

-

98

-

104

-

114

10

11

29

8-inch thick Asphalt Concrete over 12-inch thick PortlandCement ConcreteFILL [Af]SANDY LEAN CLAY - moist, olive brown, medium sand

SILTY SAND - moist, olive yellow, fine to coarse-grained,trace fine gravel (up to ½ inch in size)LAKEWOOD FORMATION [Qlw]SILTY SAND - moist, olive yellow, fine-grained, somemedium to coarse

LEAN CLAY - medium stiff, light olive, fine to medium sand

Some coarse sand, trace gravel (up to 1/4 inch in size)

SANDY SILT - moist, olive, fine sand

SILTY SAND - loose, moist, olive yellow, fine tomedium-grained

FAT CLAY with SAND - stiff, moist, light olive, fine sand,trace medium to coarse, some calcium carbonate nodules

SILTY CLAY - stiff, moist to wet, light olive, trace sand

SILTY SAND - medium dense, light olive, fine tomedium-grained, some coarse, trace gravel (up to ½ inch insize), some claySANDY LEAN CLAY - very stiff, moist, light olive toyellowish olive brown, fine sand, some silt

More clay, trace gravel (up to ½ inch in size)Some calcium carbonate nodules

CLAYEY SAND - medium dense, moist to wet, light olive toolive yellow, fine to medium-grained, some coarse, some claynodules

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

Fugro / CME 75DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSDrilling mud bailed on 5/10/2011. Ground-water level measured at 29 feet belowthe ground surface on 5/11/2011.

BOREHOLE LOCATION


199 feet

G-114

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: LHPrepared/Date: YN 8/29/2011Checked/Date: HP/PE 9/19/2011

Project No.: 4953-10-1561




Wils

hire

/ L

a B

rea

Stat

ion

ELEV

ATI

ON

(ft)

155

150

145

140

135

130

125

120

-

23.6

-

24.4

22.2

30.6

18.7

-

19.3

11.6

17.4

-

20.3

57

70

81

17

5

CH

CL

CH

SM

SP

SP-SM

SM

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

34

35

28

60

90

87

-

99

-

98

-

91

-

-

-

107

-

-

-

25

29

21

49

57

68

62

Becomes yellowish brown to olive brown, more silt and clay,fine-grained, trace gravel (up to 1/4 inch in size)

SANDY FAT CLAY - very stiff, moist, olive, fine to mediumsand, trace gravel (up to 1 inch in size)

Gravel (up to ¼ inch in size)

Layers of Silty Clay, very stiff, moist, greenish yellowishgray, some fine sand

SAN PEDRO FORMATION [Qsp]SANDY LEAN CLAY - very stiff, moist, greenish-gray, finesand

More silt

FAT CLAY with SAND - very stiff, moist, greenish-gray, finesand, some medium

SILTY SAND - dense, wet, greenish-gray, fine tomedium-grained

POORLY GRADED SAND - very dense, wet, greenish-gray,fine to medium-grained

Trace coarse sand

POORLY GRADED SAND with SILT - very dense, wet,greenish-gray, fine to medium-grained, some coarse

Becomes fine-grained, more silt

Becomes fine to coarse-grained, trace gravel ( up to ¼ inchin size)

SILTY SAND - very dense, wet, greenish gray, fine-grained,some medium to coarse

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


199 feet

G-114(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




Wils

hire

/ L

a B

rea

Stat

ion

ELEV

ATI

ON

(ft)

115

110

105

100

95

90

85

80

14.2

23.7

-

49.3

30.0

35.6

35.3

40.4

38.5

51.5

31.1

36.5

13

98

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

63

50/1"

54

60

38

63

104

-

-

-

89

-

86

-

81

-

89

-

58

63

44

51

40

38

Becomes dense, trace gravel (up to 3/4 inch in size)

Becomes very dense, more fine sand

FERNANDO FORMATION [Tf]CLAYEY SILTSTONE - hard, moist, dark olive brown toolive gray, some fine sand, weakly cemented(Sample not recovered)

Becomes wet, trace fine sand, no cementation

Weakly to moderately cemented, alternating thin layers ofgrayish sand interbedded

Becomes olive brown to olive gray, no cementation to weaklycemented

Becomes very stiff, weakly cemented

SILTSTONE - hard, moist, olive brown to olive gray, weaklycemented

Becomes dry to moist, pale olive, moderately to stronglycemented

CLAYEY SILTSTONE - hard, moist, olive green, nocementation to weakly cemented, trace fine sand

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


199 feet

G-114(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

75

70

65

60

55

50

45

40


NOTES:

Hand augered upper 6½ feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith quick set cement.


*Number of blows required to drive the Crandall Sampler 12inches using a 140 pound automatic hammer falling 30

inches

**Photo Ionization Detector used for OVA readingsSA

MPL

E LO

C.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


199 feet

G-114(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

125

130

135

140

145

150

155

160

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

195

190

185

180

175

170

165

160

21.4

25.1

26.9

32.9

20.6

35.6

46

CL

SM

ML

CL

CL

CL-ML

3.2

1.5

1.2

0.0

0.0

0.0

Push

25

21

101

-

96

-

105

-

18

24

11

10-inch thick Asphalt Concrete over 10-inch thick PortlandCement ConcreteFILL [Af]SANDY LEAN CLAY - moist, dark gray, fine to mediumsand, some coarse, some fine to coarse gravel (up to 1½ inchesin size)

Becomes light brownish yellow to white, trace calciumcarbonate nodules

LAKEWOOD FORMATION [Qlw]SILTY SAND - very loose, moist, olive yellow, fine tocoarse-grained, trace gravel (up to 1/2 inch in size)

Layers of Poorly Graded Sand with Silt, yellowish brown

SANDY SILT - very stiff, wet, olive green, fine sand, somemedium, some clay, some mica

Becomes wet

SAN PEDRO FORMATION [Qsp]SANDY LEAN CLAY - very stiff, moist, light olive green, finesand, iron oxide stains, some calcium carbonate nodules

More calcium carbonate nodules

LEAN CLAY with SAND - stiff, moist, light grayish green,fine sand, some calcium carbonate nodules, trace iron oxidestains

SILTY CLAY - stiff, wet, light greenish gray, more calciumcarbonate nodules

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


197 feet

G-116

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: LHPrepared/Date: JF 6/28/2011Checked/Date: LT/PE 9/23/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

155

150

145

140

135

130

125

120

27.1

22.9

19.3

19.1

25.8

21.0

18.7

17.7

40

33

60

29

9

13

GC

SC

ML

SM

SP-SM

SM

SP-SM

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

13

14

32

23

100

-

112

-

101

-

107

-

29

12

49

55

CLAYEY GRAVEL with SAND - medium dense, moist,bluish green, coarse-grained, some fine and medium, finegravel (up to 1/2 inch in size)

CLAYEY SAND with GRAVEL - medium dense, moist, lightgrayish green, fine to coarse-grained, some coarse, fine gravel(up to 1 inch in size)

SANDY SILT - stiff, very moist, light greenish gray, fine sand,trace medium

SILTY SAND - medium dense, wet, light grayish green,fine-grained, trace medium, trace shell fragments

POORLY GRADED SAND with SILT - dense, wet, lightgreenish gray, fine-grained, some medium, occasional coarse

SILTY SAND - dense, wet, light greenish gray, fine tomedium-grained, trace coarse

POORLY GRADED SAND with SILT - medium dense, wet,dark olive gray, fine to coarse-grained

Becomes very dense, trace gravel (up to 1/2 inch in size)

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


197 feet

G-116(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




Tun

nel

ELEV

ATI

ON

(ft)

115

110

105

100

95

90

85

80

34.5

16.7

-

2.3

11.3

53.4

9

1

90

GP

0.0

0.0

0.0

0.0

0.0

0.0

35

12

29

91

-

-

-

107

-

50/5"

57

52

Becomes olive gray to gray, fine-grained,occasional medium, some coarse

More coarse sand

Fine to coarse sand, some shell fragments

POORLY GRADED GRAVEL with SAND - very dense, wet,gray, fine rounded to subrounded gravel (up to 1/2 inch insize), some shell fragments, fine to coarse sand


Gravel (up to 1 inch in size)

FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, dark olive to grayish green, somefine sand, occasional medium, some mica, some clay

END OF BORING AT 106½ FEET

NOTES:

Hand augered upper 9½ feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.




SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


197 feet

G-116(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

190

185

180

175

170

165

160

24.3

26.2

24.4

25.5

-

21.3

10.2

13.6

13

59

ML

CL

CL

SM

ML

SM

ML

168

Push

11

27

54

98

-

100

-

-

-

117

-

23

16

63

42

6 inches thick Asphalt Concrete over 12 inches thick PortlandCement Concrete, No Base CourseFILL [Af] - SILT - soft, moist, light brown to tanQUATERNARY OLDER ALLUVIUM [Qalo]SANDY LEAN CLAY - moist, light brown to tan

SAN PEDRO FORMATION [Qsp]LEAN CLAY - very soft, moist, greenish gray, trace sand,trace calcium carbonate nodules

Becomes very stiff, with sand

SILTY SAND - medium dense, moist, greenish gray, fine tomedium-grained, with thin layer of Sandy Silt

SILT with SAND - very stiff, moist, greenish gray, fine sand,with calcium carbonate nodules, some clay


TAR IMPACTED SOILSSILTY SAND - very dense, moist, dark grayish black, fine tomedium-grained, strong sulfuric odor, moderately infused tar(8%)

Thin layer of Sandy Silt, dense, black

SANDY SILT - hard, moist, dark gray to black, moderatelyinfused tar (14%)

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/22/2011 - 3/24/2011GROUND-WATER READINGSGround-water level measured at 38 feet on 3/24/2011.

BOREHOLE LOCATION


195 feet

G-118

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

20/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: DWPrepared/Date: JF 5/19/2011Checked/Date: LT/PE 9/23/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

150

145

140

135

130

125

120

14.7

18.2

8.3

7.4

7.0

-

4.1

6.6

8.2

2.9

-

8.4

10.2

18.5

61

27

7

13

28

SM

SP-SM

SM

284

198

386

360

190

27

26

25

24

29

47

35

101

-

115

-

109

-

119

-

101

-

-

-

100

-

44

87/11"

80

51

83/11"

50

51

Becomes very stiff

Becomes dark grayish black, fine sand, trace gravel

Becomes black

SILTY SAND - very dense, dark gray to black, fine tomedium-grained, trace gravel (up to 3/8 inch in size), saturatedwith tar

POORLY GRADED SAND with SILT - medium dense, moist,black, moderately infused tar (14%)

Becomes very dense

Becomes medium dense

Becomes very dense, saturated with tarSILTY SAND - very dense, wet, black, saturated with tar(17%)

(Sample not recovered)Becomes gravelly

Becomes dense, dark grayish black, fine-grained, tracegravel (up to 3/8 inch in size), saturated with tar (17%)

Becomes medium dense, fine gravel

FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, dark brown, with sand, slightlyinfused tar

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


195 feet

G-118(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

20/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

110

105

100

95

90

85

80

21.7

20.8

28.0

21.8

18.6

24.5

25.9

26.0

23.3

186

182

108

99

14

106

55

22

20

21

29

85

-

75

-

92

-

86

-

-

54

40

52

58

Becomes dark grayish black, moderately infused tar

Slightly infused tar

Becomes stiff, moderately infused tar

Becomes hard, slightly infused tar

Becomes stiff

Becomes hard

Becomes stiff

END OF BORING AT 105½ FEET

NOTES:





SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


195 feet

G-118(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

20/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




Tun

nel

ELEV

ATI

ON

(ft)

190

185

180

175

170

165

160

155

27.2

26.1

16.5

14.4

3.1

12.2

39.5

6

17

CL-ML

CL

SP-SM

ML

SM

28

46

19

20

235

100

76

13

12

57

17

88

-

104

-

119

-

74

10

41

66

8-inch thick Asphalt Concrete over 6-inch thick PortlandCement Concrete and 1-inch thick Base CourseQUATERNARY OLDER ALLUVIUM [Qalo]SILTY CLAY - moist, dark brown, trace fine sand

SAN PEDRO FORMATION [Qsp]LEAN CLAY - stiff, moist, light brown and light gray, somefine sand

Trace cemented silt pods

Layers of greenish gray, more sand

TAR IMPACTED SOILSPOORLY GRADED SAND with SILT - dense, moist, black,fine to medium-grained, some coarse, moderately infused tar,layers of Silty Sand

Saturated with tar

Trace gravel (up to 1/2 inch in size), moderately infusedtar (14%)

SILT - hard, moist, greenish gray, slightly infused tar

Becomes brownish gray

SILTY SAND - very dense, moist, black, fine tomedium-grained, saturated with tar (17%)

Becomes medium dense, greenish gray, moderately tarinfused (9%)

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/4/2011 and 4/5/2011GROUND-WATER READINGSDrilling mud could not be bailed below 22 feet due to presence of heavy tar.Ground-water level not measured.

BOREHOLE LOCATION


192 feet

G-119

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

20/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

150

145

140

135

130

125

120

115

11.3

2.7

6.6

3.0

7.4

6.5

21.4

25.6

12

8

72

SP-SM

SP-SM

235

422

430

156

311

269

312

466

47

63

70

38

-

111

-

105

-

90

-

84

28

52

50

42


POORLY GRADED SAND with SILT - medium dense, moist,black, fine to medium-grained, saturated with tar

Becomes dense, decomposed organic fragments

Trace gravel (up to ½ inch in size)

Becomes very dense, fine-grained, trace medium to coarse,occasional gravel (up to 3/8 inch in size), saturated withtar (17%)

POORLY GRADED SAND with SILT and GRAVEL - dense,moist, black, fine-grained, some medium to coarse, fine tocoarse gravel (up to 1 inch in size), moderately infused tar(15%)

Becomes very dense

FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, brownish dark gray, slightlyinfused tar

Becomes moderately infused tar, fine sand,trace medium

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


192 feet

G-119(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

20/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

110

105

100

95

90

85

80

75

21.0

18.8

23.4

21.1

21.5

18.0

78

68

457

437

311

985

312

1243

50

49

55

-

85

-

87

-

89

52

35

36


Saturated with tar (18%)

Fine sand, some medium

Alternating with Sandy Siltstone, fine to medium sandEND OF BORING AT 106 FEET

NOTES:





SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


192 feet

G-119(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

100-

119)

.GPJ

10/

20/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




Tun

nel

ELEV

ATI

ON

(ft)

175

170

165

160

155

150

145

140

24.5

29.0

18.0

13.6

29.3

12.1

6.9

3

59

7

CL

GP

SP-SM

GM

ML

SP-SM

0.0

0.0

0.0

0.0

0.0

0.0

0.0

Push

18

7

10

90

-

77

-

84

-

101

23

24

33

4-inch thick Asphalt Concrete over 7-inch Portland CementConcreteFILL [Af]SANDY LEAN CLAY - moist, brown, fine to medium sand,occasional fine gravel

More gravel

LAKEWOOD FORMATION [Qlw]POORLY GRADED GRAVEL with SAND - medium dense,wet, olive brown to bluish gray with light brown mottled, fine,fine to coarse sand, gravel (up to 3/4 inch in size)

SAN PEDRO FORMATION [Qsp]POORLY GRADED SAND with SILT - medium dense, moist,black to dark brown, fine-grained

SILTY GRAVEL with SAND - wet, dark reddish brown, fineto coarse sandTAR IMPACTED SOILSSANDY SILT - very stiff, moist, black, fine sand, somemedium to coarse, occasional gravel (up to 3/8 inch in size),slightly infused tar

Becomes medium stiff, wet, dark brown

POORLY GRADED SAND with SILT - dense, moist, black,fine to medium-grained, moderately infused tar

Becomes loose, fine-grained, trace medium

SAM

PLE

LOC

.

Sta 516+36, Rt 14 feetHOLE DIAMETER4-7/8 inches

GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/16/2011 - 5/18/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 14 feet below the groundsurface.

BOREHOLE LOCATION


177 feet

G-121

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: HTYPrepared/Date: YN 6/20/2011Checked/Date: LT/RM 9/21/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

135

130

125

120

115

110

105

100

8.0

10.2

-

-

3.4

6.8

25.5

2

8

GW

SP

GW

SP

GP

SW-SM

ML

0.0

0.0

0.0

0.0

0.0

13

15

-

-

-

-

-

-

-

56

41

16

23

53

CLAYEY GRAVEL with SAND - very dense, moist, black,fine to coarse gravel, moderately infused tar

POORLY GRADED SAND - dense, moist, dark brown, fine tomedium-grained, saturated with tar

WELL GRADED GRAVEL with SAND - wet, black, fine tocoarse gravel, saturated with tarPOORLY GRADED SAND - medium dense, moist, black, fineto medium-grained, trace gravel, saturated with tar

POORLY GRADED GRAVEL with SAND - medium dense,wet, black, fine to coarse, fine sand

Becomes fine (up to 3/4 inch in size), coarse sand, some fineto coarse sand

WELL GRADED SAND with SILT and GRAVEL - mediumdense, moist, fine to coarse-grained, fine gravel (up to 1/2 inchin size)

SILT with SAND - hard, moist, dark brown, fine sand,moderately infused tar

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


177 feet

G-121(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




PMT

Tun

nel

ELEV

ATI

ON

(ft)

95

90

85

80

75

70

65

60

21.5

22.2

21.4

23.5

14.0

24.8

22.3

77

33

GM

ML

0.0

0.0

0.0

0.0

0.0

0.0

0.0

18

21

17

21

91

-

-

-

-

-

88

45

54

62

Becomes very stiff, fine grained, some medium

Becomes hard

Trace gravel

SILTY GRAVEL with SAND - medium dense, wet, darkbrown, fine gravel (up to 3/4 inch in size), fine to coarse sand,moderately infused tar, (sample disturbed)

GRAVELLY SILT with SAND - hard, wet, dark brown, fineto coarse sand, fine gravel (up to 3/4 inch in size), slightlyinfused tar

FERNANDO FORMATION [Tf]SILTSTONE - very stiff to hard(Sample disturbed)

More sand

Less sandEND OF BORING AT 111 FEETNOTES:Hand augered upper 5 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete."N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches


**Photo Ionization Detector used for OVA readingsDownhole Test: PMT = Pressuremeter

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


177 feet

G-121(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

165

160

155

150

145

140

135

130

15.9

19.4

16.5

19.5

-

30.7

17.2

17

67

ML

SM

ML

SM

SC

ML

CL

ML

SM

4.8

6.3

4.7

16.7

4.5

7.0

10

15

34

38

111

-

109

-

-

-

105

16

19

16

11-inch thick Asphalt Concrete over 9-inch thick SlurryBackfill and 5-inch thick Base CourseFILL [Af]SANDY SILT - moist, brown, fine to medium sand

SILTY SAND with GRAVEL - moist, light brown, fine tocoarse-grainedQUATERNARY YOUNGER ALLUVIUM [Qal] SILT - moist, light brown, some fine sand, some clay

SILTY SAND - loose, light brown, fine to medium-grained

Some gravel

QUATERNARY OLDER ALUVIUM [Qalo]TAR IMPACTED SOILSCLAYEY SAND - medium dense, moist, brown to grayishbrown, fine to medium-grained, trace coarse, slightly infusedtar (5%)Becomes greenish gray

Less clay

Becomes greenish gray, some coarse, occasional gravel,some small tar pods

SILT - moist, light brown, some clay, slight hydrogen sulfideodor

Becomes greenish gray, 4-inch cobblesSANDY LEAN CLAY - very stiff, dark gray to black, fine tomedium sand, layers of coarse sand, very light hydrogensulfide odor, some gravel

(Sample not recovered)Trace gravel (up to 1/4 inch in size)

SAN PEDRO FORMATION [Qsp]SANDY SILT - very stiff, moist, greenish gray, fine to mediumsand, slightly infused tar (4%), trace clay

SILTY SAND - dense, moist, dark brown to grayish black,fine-grained, moderately to saturated with tar, heavy hydrogensulfide odor,

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/16/2011 - 3/18/2011GROUND-WATER READINGSDrilling mud bailed on 3/18/2011. Ground-water level measured at 32 feet belowthe ground surface 15 minutes after drilling.

BOREHOLE LOCATION


168 feet

G-123

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: ARPrepared/Date: LH 6/22/2011Checked/Date: LT/RM 10/1/2011

Project No.: 4953-10-1561




PMT

PMT

Wils

hire

/ Fa

irfa

x St

atio

n

ELEV

ATI

ON

(ft)

125

120

115

110

105

100

95

90

10.0

6.4

8.5

5.8

9.4

7.9

5.5

5.1

2.0

5.3

3.1

1.8

8

15

6

SW-SM

SM

SP-SM

SM

46.7

76.8

135

62.4

145

201

147

228

93

475

214

153

96/9"

98/11"

86/9"

75/5"

75/9"

75/5"

-

114

-

109

-

105

-

120

-

107

-

113

67

56

42

71

50/5"

50/4"

Becomes very dense, black

WELL GRADED SAND with SILT - very dense, moist,black, fine to coarse-grained, trace gravel (up to 3/4 inch insize), moderately infused tar (10%)

Less gravel

SILTY SAND - dense, moist, black, fine-grained, tracemedium to coarse, trace fine gravel (up to 3/8 inch in size),moderately infused tar (11%)

Becomes very dense

6-inch layer of gravel

Becomes greenish gray, trace gravel (up to 1 inch in size)

Becomes black, some gravel, saturated with tar

POORLY GRADED SAND with SILT - very dense, dry tomoist, fine to medium-grained, occasional coarse, saturatedwith tar (16%)

SILTY SAND - very dense, dry to moist, black, fine gravel

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


168 feet

G-123(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




Wils

hire

/ Fa

irfa

x St

atio

n

ELEV

ATI

ON

(ft)

85

80

75

70

65

60

55

50

5.9

4.7

6.3

20.1

14.2

21.2

16.5

558

117

95.4

>3000

2692

1132

2934

99/8"

45

48

-

109

-

97

-

-

97

89

74

53

46

Becomes moist

FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, dark gray, fine sand, trace finegravel, moderately infused tar to saturated with tar

No gravel

END OF BORING AT 110 FEETNOTES:Hand augered upper 7 feet to avoid damage to utilites.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.





SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


168 feet

G-123(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

160

155

150

145

140

135

130

125

17.1

19.7

23.1

19.9

23.0

13.6

35

32

SM

SM

SC

SC

CH

SC

0.0

0.1

0.5

0.6

78

76

Push

11

21

108

-

99

-

95

-

16

34

42

6-inch thick Asphalt Concrete over 12-inch thick PortlandCement ConcreteFILL [Af]SILTY SAND with CLAY - moist, brown

LAKEWOOD FORMATION [Qlw]SILTY SAND - moist, orangish brown, fine tomedium-grained, trace fine gravel, layers of Clayey Sand

Becomes yellowish brown, fine-grained, trace medium tocoarse, trace gravel

CLAYEY SAND - very loose, moist, yellowish brown,fine-grained, trace medium to coarse gravel, micaceous

SAN PEDRO FORMATION [Qsp]TAR IMPACTED SOILSCLAYEY SAND - medium dense, moist, olive brown tograyish-brown, fine to medium-grained, some coarse-grained,trace iron oxide stains, slightly infused tar (4%)

FAT CLAY - stiff, moist, gray, trace fine sand

Becomes hard, gray to very dark brown, some iron oxide,some calcium carbonate nodules, heavy organic odor

CLAYEY SAND - medium dense to dense, wet, gray to verydark brown, fine to medium-grained, occasional coarse,moderately infused tar (10%)

Strong organinc odor

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


162 feet

G-124

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: DWPrepared/Date: JF 3/29/2011Checked/Date: RH/LT 10/1/2011

Project No.: 4953-10-1561




NV

Wils

hire

/ Fa

irfa

x St

atio

n

ELEV

ATI

ON

(ft)

120

115

110

105

100

95

90

85

-

11.7

-

5.1

6.1

8.2

5.6

14

9

SM

SP-SM

60

262

402

366

489

382

467

15

40

33

28

40

-

-

-

-

113

106

114

52

97

Becomes dark brown, some tar, (sample not recovered)

SILTY SAND - very dense, moist, dark brown, fine-grained,some medium, occasional coarse, moderately infused tar (7%)

Becomes dense

POORLY GRADED SAND with SILT - dense to very dense,moist, black to dark brown, fine-grained, some gravel

Becomes very dark brown, fine to medium-grained, tracecoarse, some gravel (up to 3/4 inch in size), moderatly infusedtar (13%)

Becomes medium dense, black, fine-grained

Becomes dense

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


162 feet

G-124(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




NV

NV

Wils

hire

/ Fa

irfa

x St

atio

n

ELEV

ATI

ON

(ft)

80

75

70

65

60

55

50

45

5.2

3.4

5.1

8.2

25.4

-

10SW-SM

SM

ML

482

565 70

48

85

-

121

-

106

-

-

97/9"

88

51

WELL GRADED SAND with SILT - very dense, moist, fine tocoarse-grained, fine gravel (up to 1 inch in size), moderatelyinfused tar (12%)

SILTY SAND - very dense, moist, very dark brown to black,fine grained, moderately infused tar

Becomes black to dark brown

SANDY SILT - hard, moist, olive gray, fine sand, slightlyinfused tar (<5%)

(Sample not recovered)END OF BORING AT 106 FEET

NOTES:

Hand augered upper 10 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith quick set cement.




Downhole Test: NV = Noise/Vibration

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


162 feet

G-124(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

145

140

135

130

125

120

115

110

14.5

19.0

18.4

20.1

15.4

36.6

27.3

22.8

19

ML

ML

ML

SM

ML

SM

SP

ML

0.0

0.1

0.3

0.0

0.5

3.4

0.7

2.9

12

12

33

37

112

-

104

-

107

-

94

-

22

24

18

24

8-inch thick Asphalt Concrete over 5-inch thick PortlandCement Concrete and 12-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SILT - moist, trace fine sand, some clay

SANDY SILT - stiff, moist, brown, fine to medium sand

SILT - very stiff, moist, light brown, some fine sand, some clay

LAKEWOOD FORMATION [Qlw]SILTY SAND - loose, moist, light brown, fine tomedium-grained

Becomes olive brown, fine-grained, trace iron oxide stains

Becomes medium dense, brown to olive brown

Occasional medium sand

SAN PEDRO FORMATION [Qsp]SANDY SILT - very stiff, moist, olive brown

SILTY SAND - moist, bluish gray, fine to medium-grained

POORLY GRADED SAND - dense, moist, bluish gray, fine tomedium-grained

SILT - very stiff, moist, bluish gray, fine to medium sand,some clay

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


146 feet

G-125

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.

Field Tech: ARPrepared/Date: JF 6/10/2011Checked/Date: LT 9/22/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

105

100

95

90

85

80

75

70

14.1

19.1

19.5

18.6

22.6

24.1

16.2

23.3

28.4

19.6

24.7

15.6

27.8

61

15

90

14

SM

ML

SM

MH

SP

SM

3.8

4.9

5.9

8.3

8.1

8.3

8.6

8.4

8.4

8.3

8.2

8.1

8.3

21

23

34

62

37

53

95

115

-

107

-

99

-

112

-

96

-

103

-

96

36

40

32

42

66

83

Becomes greenish gray, trace gravel (up to 1/8 inch in size)

SILTY SAND - dense, moist, bluish gray, fine tocoarse-grained, layers of Silt

SANDY SILT - very stiff to hard, moist, greenish gray, fine tomedium sand, trace coarse sand, occasional gravel (up to 3/8inch in size), layers of Sandy Lean Clay

SILTY SAND - very dense, greenish gray, fine tomedium-grained, occasional coarse, some fine gravel (up to3/4 inch in size), trace hydrogen sulfide odor

ELASTIC SILT - hard, wet, greenish gray, some fine sand,trace medium to coarse sand, some clay, trace hydrogensulfide odor

POORLY GRADED SAND - dense to very dense, moist,bluish gray, fine to medium-grained


SILTY SAND with GRAVEL - very dense, moist, gray,fine-grained, some medium to coarse, fine gravel (up to 3/4inch in size)

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


146 feet

G-125(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




Tun

nel

ELEV

ATI

ON

(ft)

65

60

55

50

45

40

35

30

15.7

18.3

16.0

25.5

25.8

23.0

27.1

19.5

16.0

19.0

22.3

15

SP

SM

ML

SP-SM

ML

SM

SP

SP

7.6

10.5

13.0

10.1

9.2

8.7

7.9

8.9

7.8

9.3

9.4

75/6"

80/11"

66

50

75/5"

-

99

-

93

-

94

-

107

-

103

-

50/4"

74

62

34

52/6"

50/5"

POORLY GRADED SAND - very dense, moist, bluish gray

Trace gravel (up to ½ inch in size), trace hydrogen sulfideodor

SILTY SAND - very dense, wet, dark gray, fine-grained

SILT with SAND - moist, greenish gray

POORLY GRADED SAND with SILT - very dense, dark gray,fine-grained

SILT with SAND - hard, wet, greenish gray, some clay

SILTY SAND - dense, moist, greenish gray, fine tomedium-grained, trace gravel, trace cobble (up to 6 inches insize)Thin layer of Silt, some clay

POORLY GRADED SAND - very dense, moist, greenish gray,fine-grained, trace hydrogen sulfide odor

Becomes gray, fine to medium-grained

POORLY GRADED SAND with GRAVEL - very dense, wet,greenish gray, fine to medium-grained, trace hydrogen sulfideodor, gravel (up to 1/4 inch in size)

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


146 feet

G-125(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

85

90

95

100

105

110

115

120

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

25

20

15

10

5

0

-5

-10


NOTES:





SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T


BOREHOLE LOCATION


146 feet

G-125(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

125

130

135

140

145

150

155

160

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.




ELEV

ATI

ON

(ft)

140

135

130

125

120

115

110

105

30.2

25.3

30.6

27.4

30.0

31.8

CL

CL

MH

Push

6

9

88

-

89

-

90

-

8

13

15

4-inch thick Asphalt Concrete over 12-inch thick PortlandCement Concrete, No Base CourseFILL [Af]CLAY and SAND - moist, dark brown to dark gray, withgravel(Sand - possible utility backfill)

QUATERNARY YOUNGER ALLUVIUM [Qal]LEAN CLAY - very soft, moist, light brown

Becomes medium stiff, brown, thinlayer of fine Silty Sand

Trace sand

Becomes stiff, thin layers of Sandy Lean Clay

SAN PEDRO FORMATION [Qsp]ELASTIC SILT - stiff, moist, greenish gray, trace fine sand

Becomes very stiff, wet, trace calcium carbonate nodules

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/4/2011-4/7/2011GROUND-WATER READINGSGround-water level encountered at 31 feet below ground surface.

BOREHOLE LOCATION


143 feet

G-126

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

5

10

15

20

25

30

35

40

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

100

95

90

85

80

75

70

65

23.6

20.5

21.0

29.1

34.9

29.2

25.9

28.3

42

55

45

SC

SM

ML

SP

SM

10

21

43

79

101

-

-

94

92

-

98

-

30

44

49

36

Alternating with layers of Poorly Graded Gravel

CLAYEY SAND - dense, wet, light gray to gray, fine-grained,trace gravel, calcium carbonate nodules

Cobbles (up to 3 inches in size)

SILTY SAND - dense, wet, gray, fine-grained


SANDY SILT - hard, wet, gray, fine sand

POORLY GRADED SAND - very dense, wet, gray,fine-grained, trace silt, micaceous

SILTY SAND - dense, wet, greenish gray, fine-grained, thinlayer of Lean Clay

SAM

PLE

LOC

.


GROUND EL.

MO

ISTU

RE

CO

NTE

NT

(% o

f dry

wt.)

PER

CEN

T PA

SSIN

GN

o. 2

00 S

IEV

E

DO

WN

HO

LE T

ESTS

OV

A (p

pm)*

*

BLO

W C

OU

NT*

(blo

ws/

ft)

DR

Y D

ENSI

TY(p

cf)

"N"

VA

LUE

STD

.PEN

.TES

T

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/4/2011-4/7/2011GROUND-WATER READINGSGround-water level encountered at 31 feet below ground surface.

BOREHOLE LOCATION


143 feet

G-126(Continued)

LOG OF BORING

BORING NO.LA

MET

RO

PB

-TU

NN

EL Z

ON

E S

:\701

31 G

EOTE

CH

\GIN

TW\L

IBR

AR

Y M

AC

TEC

JUN

E201

1.G

LBG

:\PR

OJE

CT_

DIR

ECTO

RIE

S\49

53\2

010\

1015

61_M

ETR

O_W

ESTS

IDE_

EXTE

NSI

ON

\6.2

.3.1

GEO

TEC

HN

ICA

L D

ESIG

N\3

.2 A

LL F

IELD

NO

TES\

GIN

T LO

G\N

EW T

EMPL

ATE

- M

AR

CH

14,

201

1\49

53-1

0-15

61_(

120-

139)

.GPJ

10/

18/1

1

DEP

TH (f

t)

45

50

55

60

65

70

75

80

THIS

REC

OR

D IS

AN

INTE

RPR

ETA

TIO

N O

F SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

THE

EXPL

OR

ATI

ON

LO

CA

TIO

N. L

ATI

TUD

E A

ND

LO

NG

ITU

DE

OF

BO

RIN

G L

OC

ATI

ON

SH

OW

N O

N L

OG

S A

RE

APP

RO

XIM

ATE

.SU

BSU

RFA

CE

CO

ND

ITIO

NS

AT

OTH

ER L

OC

ATI

ON

S A

ND

AT

OTH

ER T

IMES

MA

Y D

IFFE

R.

INTE

RFA

CES

BET

WEE

N S

TRA

TA A

RE

APP

RO

XIM

ATE

. TR

AN

SITI

ON

S B

ETW

EEN

STR

ATA

MA

Y B

E G

RA

DU

AL.


Project No.: 4953-10-1561




Tun

nel

drilling company/drilling equipment...

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