DRILLING COMPANY/DRILLING EQUIPMENT …media.metro.net/projects_studies/westside/images/final...Tri County Drilling / CME 75 DRILLING METHOD Rotary Wash DATES DRILLED 5/9/2011 - 5/11/2011

ELEV

ATI

ON

(ft)

205

200

195

190

185

180

175

170

18.4

16.6

10.1

18.0

12.7

10.1

13.9

17

ML

SM

CL

SM

SW

SM

SP

CL

2.2

0.5

0.0

1.1

1.4

11

31

26

34

104

-

111

-

120

-

110

18

15

41

7-inch thick Asphalt Concrete over 5-inch thick PortlandCement Concrete, 4-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SANDY SILT - moist, brown, fine sand

SILTY SAND - loose, moist, brown, fine to medium-grained,trace clay, trace fine gravel

QUATERNARY OLDER ALLUVIUM [Qalo]SANDY LEAN CLAY - very stiff, moist, brown, fine sand

SILTY SAND - medium dense, moist, orangish brown, fine tomedium-grained, trace clay, trace fine gravel

WELL GRADED SAND with GRAVEL - medium dense,moist, brownish gray, fine to coarse-grained, coarse slategravel

Becomes dark greenish gray, sandier seams

SILTY SAND with GRAVEL - dense, very moist, fine tocoarse-grained, fine gravel (up to 1/2 inch in size)

POORLY GRADED SAND - medium dense, very moist,brown, fine to medium-grained, alternating Well Graded Sand,some fine gravelSAN PEDRO FORMATION [Qsp]LEAN CLAY with GRAVEL - moist, dark greenish gray

SAM

PLE

LOC

.

Sta 628+70, Lt 11 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 Drilling / CME 75DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSDrilling mud bailed on 5/10/2011. Ground-water level measured at 32 feet belowthe ground surface on 5/11/2011.

BOREHOLE LOCATION

DRILLING COMPANY/DRILLING EQUIPMENT

209 feet

G-142

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_(

140-

160)

.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: JHDPrepared/Date: WL 6/28/2011Checked/Date: LT 10/6/2011

Project No.: 4953-10-1561

(CONTINUED ON FOLLOWING FIGURE)

Figure: A-2.38aMTA Westside Subway Extension

Los Angeles, California

ELEV

ATI

ON

(ft)

165

160

155

150

145

140

135

130

29.9

26.3

26.9

18.7

19.2

25.2

19.2

14.8

88

29

73

CL

MH

SM

CL

CL

0.5

0.0

2.4

2.3

2.9

2.0

2.9

21

44

33

43

-

102

-

109

-

99

-

116

17

13

23

57

LEAN CLAY - very stiff, very moist, dark bluish gray, tracegravel

Less gravel

ELASTIC SILT - stiff, moist, dark greenish gray, some fine tomedium sand

Becomes greenish gray to bluish gray

More fine gravel

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

Some clay, trace gravel

LEAN CLAY with SAND - very stiff, moist, dark greenishgray to bluish gray, fine sand, trace medium

LEAN CLAY with GRAVEL - hard, moist, dark gray, coarsegravel

Less gravel

Becomes very stiff, some gravel

Shale interbedded

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


209 feet

G-142(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_(

140-

160)

.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-2.38bMTA Westside Subway Extension


Tun

nel

ELEV

ATI

ON

(ft)

125

120

115

110

105

100

95

90

19.1

6.0

29.0

24.5

66CL

ML

CL

2.9

2.3

3.5

2.9

51

46

-

122

-

-

35

27

SANDY LEAN CLAY - hard, moist, dark gray, fine to coarsesand, some shale interbedded, trace fine gravel (up to 3/4 inchin size)

SANDY SILT with GRAVEL - hard, moist, dark greenishgray, gravel (up to 1/4 inch in size), trace clay

SANDY LEAN CLAY - very stiff, moist, dark greenish gray

Trace coarse gravel

Some siltEND OF BORING AT 96 FEET

NOTES:

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

*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 readings

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


209 feet

G-142(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_(

140-

160)

.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-2.38cMTA Westside Subway Extension


ELEV

ATI

ON

(ft)

215

210

205

200

195

190

185

180

18.0

17.9

12.5

14.8

10.6

14.2

10.5 16

ML

CH

CL

SC

CL

SM

SM

3.2

5.3

4.7

3.8

2.9

3.2

4.4

12

27

27

34

102

-

122

-

119

-

110

23

32

55

10-inch thick Asphalt Concrete over 5-inch thick PortlandCement Concrete and 3-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SANDY SILT - moist, brown, fine sand

FAT CLAY - medium stiff, moist, brown

LEAN CLAY - very stiff, moist, orangish brown, trace shalefragments

CLAYEY SAND - medium dense, brown with greenish graymottling, fine to medium-grained, abundant shale fragments,layers of Clayey Sand

QUATERNARY OLDER ALLUVIUM [Qalo]LEAN CLAY with GRAVEL - hard, moist, brown, trace shale

More small shale fragments

SILTY SAND - medium dense, moist, brown with dark graymottling, fine to medium-grained, some gravel, some clay

Becomes very dense, very moist, dark brown,medium-grained, abundant shale fragments

SILTY SAND with GRAVEL - medium dense, moist,brownish gray, fine to coarse-grained, fine to coarse gravel (upto 1 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


216 feet

G-143

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_(

140-

160)

.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: JHDPrepared/Date: YN 6/9/2011Checked/Date: LT/PE 9/27/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

175

170

165

160

155

150

145

140

13.1

22.6

18.8

22.1

22.9

14.4

14.2

16.7

72

25

29

CL

CL

SC

CL

5.6

5.3

6.2

5.9

5.5

4.7

3.2

3.8

23

22

45

42

-

102

-

102

-

120

-

115

41

19

19

42

Becomes dense, more shale fragments, layer ofWell Graded Sand

LEAN CLAY - stiff, moist, dark olive brown, trace coarsegravel

Becomes very stiff, olive brown, trace shale fragments,thin layer of silt

LEAN CLAY with SAND - stiff, moist, brown, some finesand, occasional medium

Becomes very stiff, dark brown, trace coarse shalefragments

CLAYEY SAND with GRAVEL - medium dense, moist, darkbrown, brown and olive brown mottling, fine tocoarse-grained, fine gravel (up to 3/4 inch in size)

Becomes dense, dark olive brown

LEAN CLAY - very stiff, moist, dark brown, trace shalefragments

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


216 feet

G-143(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_(

140-

160)

.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)

135

130

125

120

115

110

105

100

17.8

10.8

11.6

34

ML

SM

3.6

2.9

3.2

80

-

111

-

28

50/4"

SANDY SILT - very stiff, moist, olive brown, trace clay, traceshale fragments

SAN PEDRO FORMATION [Qsp]SILTY SAND - very dense, dry, greenish gray, fine tocoarse-grained, occasional fine gravel (up to 3/8 inch in size)

Becomes dark gray, thin layer of gravel

END OF BORING AT 91½ FEET

NOTES:

Hand augered upper 5½ feet to avoid damage to utilities.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


216 feet

G-143(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_(

140-

160)

.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)

220

215

210

205

200

195

190

185

21.2

26.8

17.0

17.9

8.7

22.1

8.4

85

12

ML

SM

CL

CH

SM

GC

CL-ML

CL

22

20

42

45

99

-

113

-

123

-

130

13

28

15

10-inch thick Asphalt Concrete over 5-inch thick PortlandCement Concrete and 3-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SANDY SILT - moist, brown, very fine sand

Some clay

SILTY SAND - medium dense, moist, light brown,fine-grained

LEAN CLAY with SAND - stiff, moist, light brown, fine sand

QUATERNARY OLDER ALUVIUM [Qalo]FAT CLAY with SAND - stiff, moist, brown, fine sand, tracemedium to coarse sand

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

Becomes very stiff, olive brown, some gravel

SILTY SAND - medium dense, moist, brown, fine-grained

CLAYEY GRAVEL with SAND - medium dense, moist, lightbrown, fine gravel (up to 3/4 inch in size), fine to mediumsand, trace coarse

SILTY CLAY - stiff, moist, olive brown, fine sand, some clay,trace gravel

LEAN CLAY with SAND - very stiff, moist, light brown, fineto coarse sand, trace gravel (up to 3/4 inch in size)

SAM

PLE

LOC

.

Sta 642+55, Lt 25 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 DRILLED5/31/2011 - 6/1/2011GROUND-WATER READINGSGround-water level measured at 53 feet below the ground surface on 6/2/2011.

BOREHOLE LOCATION


223 feet

G-144

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_(

140-

160)

.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 6/17/2011Checked/Date: HP/PE 9/19/2011

Project No.: 4953-10-1561




PMTW

ilshi

re /

Rod

eo S

tatio

n

ELEV

ATI

ON

(ft)

180

175

170

165

160

155

150

145

9.3

8.8

22.4

19.8

20.7

21.7

20.1

16.7

21

27

77

79

SM

SM

CL

43

26

25

25

-

113

-

110

-

100

-

112

85/10"

19

26

26

SILTY SAND with GRAVEL - very dense, moist, dark oliveyellow, fine to caorse-grained, some gravel (up to 1/2 inch insize)

SILTY SAND - medium dense, moist, dark olive yellow toolive brown, fine to medium-grained, some coarse, trace finegravel (up to 1/2 inch in size)

LEAN CLAY with SAND - very stiff, moist, olive brown, fineto medium sand

More sand

Some slate gravel

Fine sand, trace fine to coarse gravel (up to3/8 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


223 feet

G-144(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_(

140-

160)

.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

/ R

odeo

Sta

tion

ELEV

ATI

ON

(ft)

140

135

130

125

120

115

110

105

15.3

12.1

11.9

21.6

10.4

13.7

17.6

7.9

33

72

29

SC

CL

SC

SC

SC

SM

46

31

41

81

-

117

-

104

-

110

-

126

39

75

40

51

Becomes hard, yellowish brown

CLAYEY SAND with GRAVEL - dense, moist, dark oliveyellow, fine to medium-grained, gravel (up to 1/2 inch in size)

Becomes very dense, fine to coarse-grained, gravel(up to 1 inch in size)

LEAN CLAY with SAND - very stiff, moist, dark olive, finesand, trace silt nodules

Trace gravel

CLAYEY SAND - dense, fine to medium-grained, trace finegravel (up to 1/2 inch in size)

CLAYEY SAND with GRAVEL - medium dense, moist,brownish gray, fine to coarse-grained, gravel (up to 1/2 inch insize)

SAN PEDRO FORMATION [Qsp]CLAYEY SAND - very dense, moist, greenish gray, fine tocoarse-grained, trace fine gravel (up to 3/4 inch in size)

SILTY SAND with GRAVEL - very dense, moist, greenishgray, fine to coarse-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


223 feet

G-144(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_(

140-

160)

.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-2.40cMTA Westside Subway Extension


ELEV

ATI

ON

(ft)

100

95

90

85

80

75

70

65

10.3 -50/3"

END OF BORING AT 121½ feet

NOTES:

Hand augered upper 5 feet due to utilities. Borehole groutedwith cement-bentonite slurry and patched with quick setcement.


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


Downhole 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


223 feet

G-144(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_(

140-

160)

.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.


Project No.: 4953-10-1561 Figure: A-2.40dMTA Westside Subway Extension


ELEV

ATI

ON

(ft)

230

225

220

215

210

205

200

195

18.8

13.6

18.6

16.2

-

16.8

12.9

84

59

42

SM

CL

CH

GP

GP-GC

CL

SM

0.5

0.4

0.0

Push

5

7

104

-

111

-

-

-

-

10

22

10

33

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

QUATERNARY YOUNGER ALLUVIUM [Qal]LEAN CLAY with SAND - very soft, moist, olive grayishbrown, fine to medium sand


FAT CLAY with SAND - stiff, moist, brown, fine to coarsesand, trace gravel (up to 1/2 inch in size)

POORLY GRADED GRAVEL - loose, moist, brown

POORLY GRADED GRAVEL with CLAY - loose, moist,brown, fine to coarse sand

QUATERNARY OLDER ALLUVIUM [Qalo]SANDY LEAN CLAY - very stiff, moist, brown, fine to coarsesand


(Sample not recovered)

Becomes stiff, trace gravel

SILTY SAND - dense, moist, light olive brown, fine tomedium-grained, some coarse, some fine gravel (up to 1/2 inchin 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

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/14/2011 - 4/15/2011GROUND-WATER READINGSDrilling mud bailed on 4/15/2011. Ground-water level measured at 71 feet belowthe ground surface on 4/18/2011.

BOREHOLE LOCATION


231 feet

G-145

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_(

140-

160)

.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: YN 6/20/2011Checked/Date: HP/PE 9/19/2011

Project No.: 4953-10-1561




Wils

hire

/ R

odeo

Sta

tion

ELEV

ATI

ON

(ft)

190

185

180

175

170

165

160

155

-

5.6

16.0

-

19.5

-

-

17.4

14.8

-

20.4

-

20

73

61

70

SP-SM

CL

CL

CL

4

4

16

20

10

-

-

-

-

-

-

-

-

111

-

-

-

8

19

25

18

15

18

28


POORLY GRADED SAND - loose, moist, brown, fine tocoarse-grained, thin layers of Sandy Silt, trace fine gravel (upto 1/2 inch in size)SANDY LEAN CLAY - very stiff, moist, brown, some finegravel

(Sample not recovered)LEAN CLAY with SAND - very stiff, moist, brown, some finegravel (up to 3/4 inch in size)



Becomes stiff, with fine gravel

SANDY LEAN CLAY - very stiff, moist, brown, trace clay,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


231 feet

G-145(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_(

140-

160)

.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

NV

Wils

hire

/ R

odeo

Sta

tion

ELEV

ATI

ON

(ft)

150

145

140

135

130

125

120

115

5.5

17.5

19.2

10.5

20.5

19.0

3.5

22.5

16

50

78

SM

SM

SP-SM

SM

SM

SM

SP

CL

CL

69

30

17

27

115

-

105

-

101

-

112

-

74/11"

60

67

37

SILTY SAND with GRAVEL - very dense, moist, brown, fineto coarse-grained, gravel (up to 1/2 inch in size)

SILTY SAND - very dense, moist, light brownish gray, fine tomedium-grained, iron oxide stains, trace gravel (up to 3/4 inchin size), trace clay

POORLY GRADED SAND with SILT and GRAVEL -medium dense to dense, moist, light brownish gray, fine tocoarse-grained, gravel (up to 1/4 inch in size)

SILTY SAND with GRAVEL - very dense, moist, olive yellow,fine to medium-grained, slate gravel (up to 1½ inch in size)

SAN PEDRO FORMATION [Qsp]SILTY SAND - medium dense, moist, olive, fine sand, tracegravel (up to 3/8 inch in size)

Thin layer of Sandy Silt

SILTY SAND - very dense, brown, fine-grained, iron oxidestains, trace gravelPOORLY GRADED SAND - very dense, moist, brown, fine tomedium-grained

LEAN CLAY with SAND - very stiff, moist, gray to lightbrown, trace gravel (up to 3/8 inch in size)

SANDY LEAN CLAY - hard, moist, gray, fine sand, somemedium

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


231 feet

G-145(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_(

140-

160)

.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)

110

105

100

95

90

85

80

75

15.7SC

26118SANDY LEAN CLAY - very stiff, moist, gray, fine to mediumsand, trace fine gravelEND OF BORING AT 121 FEET

NOTES:

Hand augered upper 8 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


231 feet

G-145(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_(

140-

160)

.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)

235

230

225

220

215

210

205

200

20.1

22.4

-

16.0

16.4

16.5

13.1

ML

SM

CL-ML

CL-ML

CL

SM

SP-SM

SP

2.8

2.1

2.9

3.2

0.3

1.0

3.4

10

10

21

20

44

96

-

-

-

115

-

116

13

32

30

9-inch thick Asphalt Concrete over 5-inch thick PortlandCement Concrete and 3-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SANDY SILT - moist, light brown, fine sand

SILTY SAND - moist, light brown, fine to medium-grained,trace slate gravel

SANDY SILTY CLAY - medium stiff, moist, brown, finesand, trace coarse, rootlets (up to 1/4 inch in size)Trace gravelQUATERNARY OLDER ALLUVIUM [Qalo]SILTY CLAY - stiff, moist, dark olive, some fine sand, traceslate gravel


SANDY LEAN CLAY - very stiff, moist, brown, fine sand,trace coarse, trace calcium carbonate nodules, tracemagnesium nodules

Becomes hard. dark olive, fine to medium sand, trace gravel

Becomes very stiff, olive brown to brown, fine sand, tracemedium

SILTY SAND - medium dense, moist, brown, fine tomedium-grained, some coarse, trace gravel

POORLY GRADED SAND with SILT - medium dense, moist,brown, fine to coarse-grained, trace gravel

Some slate fragments (up to 3 inches in size)

POORLY GRADED SAND - dense, moist, brown to yellowishbrown, fine to coarse-grained, fine to coarse gravel (up to 1inch in size), trace clay, trace micaAlternating with thin layers of Silt

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 DRILLED4/21/2011 and 5/5/2011GROUND-WATER READINGSDrilling mud bailed on 4/21/2011. Ground-water level measured at 32 feet belowthe ground surface on 5/5/2011 (after two weeks).

BOREHOLE LOCATION


239 feet

G-146

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_(

140-

160)

.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 9/21/2011Checked/Date: LT/PE 9/26/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

195

190

185

180

175

170

165

160

19.1

12.4

16.7

21.5

17.1

17.0

21.3

19.0

29.6

24.0

15.7

20.3

16.7

58

64

90

SM

ML

CL-ML

CL

ML

CL

CL

ML

0.0

3.1

3.2

2.5

0.5

2.7

0.5

2.9

1.4

4.3

7.9

9.2

7.9

22

13

27

24

19

34

-

118

-

101

-

111

-

107

-

101

-

108

-

16

20

23

17

23

36

25

SILTY SAND - medium dense, moist, brown, fine tomedium-grained, trace coarse

SANDY SILT - very stiff, moist, dark olive, fine to coarsesand, trace fine gravel (up to 3/8 inch in size)

SILTY CLAY - stiff, moist, dark brown, some fine sand, tracemedium to coarse, trace fine gravel (up to 1/4 inch in size)

SANDY LEAN CLAY - very stiff, moist, olive brown, finesand, trace medium and coarse, trace fine gravel (up to 1/4inch in size)

More sand, slate gravel (up to ½ inch in size)

Thin layer of Silty Sand, olive brown, fine to medium-grained

SILT - very stiff, wet, dark olive, trace fine sand, some clay

SANDY LEAN CLAY - very stiff, moist, dark brown to olivebrown, fine sandThin layers of Silt and Sandy Silt

LEAN CLAY - very stiff, moist, olive brown, trace fine sand

SANDY SILT - hard, moist, dark olive, very fine to fine sand,trace fine gravel (up to ½ inch in size)

Becomes very stiff, trace fine to coarse gravel (up to ¾ inch insize)

Becomes olive yellow to dark olive, 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


239 feet

G-146(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_(

140-

160)

.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)

155

150

145

140

135

130

125

120

17.7

22.4

24.7

11.2

13.7

14.4

9.4

75

17

CL

SM

ML

SM

SW-SM

7.2

5.4

5.7

6.1

5.6

5.9

5.4

33

28

63

80/6"

112

-

99

-

116

-

129

49

75

53/6"

LEAN CLAY with SAND - very stiff, moist, olive yellow todark olive, fine sand

Becomes hard, trace fine gravel (up to ½ inch in size)

Coarse gravel (up to 3 inches in size)

Some medium sand and fine gravel (up to ¼ inch in size)

Thin layer of Sandy Silt, brown, fine sandSILTY SAND - very dense, moist, dark olive brown, fine tocoarse-grained, trace fine gravel (up to ½ inch in size)

SILT - moist, brown, trace gravel

SILTY SAND with GRAVEL - very dense, moist, brown,fine-grainedWELL GRADED SAND with SILT and GRAVEL - verydense, moist to wet, olive brown, fine to coarse-grained, finegravel (up to ½ inch in size), alternating with layer of PoorlyGraded Sand

Becomes dark olive to dark olive yellow, more clay, fine gravel(up to 3/4 inch in size)

END OF BORING AT 105 FEET

NOTES:

Hand augered upper 5 feet due to utilities. Borehole groutedwith cement bentonite slurry and patched with asphaltconcrete.




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


239 feet

G-146(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_(

140-

160)

.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)

245

240

235

230

225

220

215

210

-

18.8

15.7

11.1

20.4

6.3

20.4

ML

SM

CL

SM

CL

GM

CL

0.0

0.4

0.2

0.5

1.0

1.1

1.4

12

23

23

22

-

-

104

-

106

-

100

16

28

35

6-inch thick Asphalt Concrete over 10-inch thick PortlandCement Concrete, No Base CourseQUATERNARY YOUNGER ALUVIUM [Qal]SANDY SILT - moist, dark brown, fine sand

Thin layers of Lean Clay

SILTY SAND - loose, dark brown, fine to medium-grained,slightly porous

LEAN CLAY - very stiff, moist, dark brown, trace gravel

QUATERNARY OLDER ALUVIUM [Qalo]SILTY SAND with GRAVEL - medium dense, moist, orangebrown to brown, fine to medium-grained

SANDY LEAN CLAY - very stiff, moist, dark orangishbrown, fine to medium sand

SILTY GRAVEL with SAND - dense, moist, brownish gray,shale gravel, some quartz gravel, fine to coarse sand

GRAVELLY LEAN CLAY - stiff, moist, dark brown, somecoarse shale 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

Tri Country Drilling / CME 75DRILLING METHODRotary WashDATES DRILLED5/16/2011 - 5/18/2011GROUND-WATER READINGSDrilling mud bailed on 5/17/2011. Ground-water level measured at 46 feet on5/18/2011.

BOREHOLE LOCATION


246 feet

G-147

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_(

140-

160)

.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: JHDPrepared/Date: YN 6/13/2011Checked/Date: HP/LT 10/2/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

205

200

195

190

185

180

175

170

23.7

15.9

10.2

18.5

25.7

13.3

9.3

15.8

22

59

CL-ML

SM

CL

SM

CL

1.4

1.4

1.1

1.6

2.1

1.6

0.6

0.2

38

32

63

50

-

112

-

108

-

114

-

113

15

94/8"

23

90

SILTY CLAY - stiff to very stiff, moist, dark orangish brown

SILTY SAND with GRAVEL - very dense, moist, orangishbrown, some shale and quartz gravel

LEAN CLAY with GRAVEL - very stiff, moist, dark orangishbrown, coarse gravel

Becomes hard

SILTY SAND - very dense, moist, orangish brown, fine tocoarse-grained, some fine gravel (up to 3/8 inch in size)

SANDY LEAN CLAY - hard, moist, dark orangish brown,fine to medium sand, trace coarse, trace fine gravel (up to 3/8inch 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


246 feet

G-147(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_(

140-

160)

.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)

165

160

155

150

145

140

135

130

18.0

18.0

7.5

14.1

8.1

17.6

16.9

26.0

65

25

25

19

20

81

SM

SM

SM

GW

CL

ML

0.4

0.5

1.1

0.6

0.5

0.2

0.0

65

42

78

55

-

113

-

119

-

114

-

99

45

50/3"

50/4"

43

SILTY SAND - dense, moist, orangish brown, fine tocoarse-grained

SILTY SAND with GRAVEL - very dense, moist, dark gray,fine to coarse-grained, fine gravel (up to 1/2 inch in size)

Becomes medium dense, very moist, dark orangish brown

SILTY SAND - very dense, moist, dark orangish brown, fineto coarse-grained, fine gravel (up to 1/2 inch in size)

WELL GRADED GRAVEL - dense, moist, dark gray, coarsegravel

SANDY LEAN CLAY - hard, moist, dark orangish brown,some coarse gravel

Trace gravel

SILT with SAND - hard, very moist, dark brown

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


246 feet

G-147(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_(

140-

160)

.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




Tun

nel

ELEV

ATI

ON

(ft)

125

120

115

110

105

100

95

90

18.0 -45


NOTES:

Hand augered upper 5½ feet to avoid damage to utilities.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

**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


246 feet

G-147(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_(

140-

160)

.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)

250

245

240

235

230

225

220

215

23.3

25.2

-

16.9

18.5

21.7

12.8

6.5

82

62

ML

CL

CL

SP-SM

ML

1.5

1.2

1.7

3.6

5.9

4.7

4.1

12

28

13

20

24

97

-

-

114

-

107

-

124

10/10"

21

25

6-inch Asphalt Concrete over 8-inch thick Portland CementConcrete, 5-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SANDY SILT - medium stiff, moist, brown, fine sand, slightlyporous

Becomes dark brown, trace clay

LEAN CLAY - stiff, moist, brown


Becomes very stiffQUATERNARY OLDER ALLUVIUM [Qalo]LEAN CLAY with SAND - very stiff, moist, olive brown, fineto medium sand

Trace slate gravel

POORLY GRADED SAND with SILT and GRAVEL -medium dense, moist, brown, fine to medium-grained

SANDY SILT - very stiff, moist, light brown, fine to mediumsand, some coarse, some gravel

Becomes stiff, brown, fine 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


252 feet

G-148

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_(

140-

160)

.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 6/14/2011Checked/Date: JAG/PE 9/26/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

210

205

200

195

190

185

180

175

20.8

15.6

19.2

19.4

29.4

14.9

19.5

14.7

40

45

64

CL

SM

CL

CL

CH

SC

CL

5.2

5.9

6.2

6.1

6.7

6.9

7.1

5.4

32

22

44

40

-

119

-

111

-

117

-

-

12

14

19

40

LEAN CLAY - stiff, very moist, brown

SILTY SAND with GRAVEL - medium dense, moist, orangishbrown, trace gravel

Trace gravel

LEAN CLAY - stiff, very moist, brown

SANDY LEAN CLAY - very stiff, very moist, reddish brown

FAT CLAY - very stiff, very moist, brown

CLAYEY SAND - dense, moist, olive yellow to olive, fine tomedium-grained, some coarse, some gravel (up to ½-inch insize)

Alternating thin fine to medium-grained layers,very dense

SANDY LEAN CLAY - hard, moist, brownish orange, fine tocoarse sand, some gravel

Becomes more sandy with trace silt

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


252 feet

G-148(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_(

140-

160)

.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)

170

165

160

155

150

145

140

135

11.4

13.1

13.5

8.5

19.5

11.7

23.6

19.4

28

26

65

29

63

SM

CL

SM

CL

SM

CL

5.9

4.3

4.7

4.9

4.4

5.1

5.7

5.1

57

40

56

34

-

113

-

119

-

120

-

108

66

32

31

33

SILTY SAND - very dense, moist, brown, fine-grained, traceclay

Becomes dense, very moist to wet, orangish brown, fine tomedium-grained, some coarse, trace clay and gravel

SANDY LEAN CLAY - moist, brown, fine to coarse sand

SILTY SAND - very moist to wet, fine to medium grained

SANDY LEAN CLAY - hard, moist, brown, fine to coarsesand, trace gravel

SILTY SAND - dense, moist, brown, fine to coarse-grained,some gravelLarge slate gravel and small cobble

SANDY LEAN CLAY - hard, moist, brown, fine to coarsesand

Layers of Clayey Sand, fine to coarse

Becomes very stiff

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


252 feet

G-148(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_(

140-

160)

.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




Tun

nel

ELEV

ATI

ON

(ft)

130

125

120

115

110

105

100

95

14.0

16.7

24.0

18.7

-

68

54

ML

CL

5.8

2.3

2.5

3.1

5.4

64

44

-

110

-

111

-

44

44

56

SANDY SILT - hard, moist, brown, fine to coarse sand, somegravelSANDY LEAN CLAY - hard, moist, light brown

Becomes more silty

Mottled brown and gray, some cemented clay layers


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


252 feet

G-148(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_(

140-

160)

.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)

255

250

245

240

235

230

225

220

14.8

12.3

18.7

18.6

9.4

17.4

27.4

39

ML

ML

SM

ML

SM

CL

ML

1.9

1.2

1.7

4.3

1.4

3.2

2.1

19

5

14

14

108

-

97

-

106

-

93

21

12

37

10-inch thick Asphalt Concrete over 6-inch thick PortlandCement Concrete and 4-inch thick Base CourseFILL [Af]SANDY SILT - moist, brown, trace gravel

QUATERNARY YOUNGER ALLUVIUM [Qal]SILT with SAND - very stiff, moist, dark olive brown, fine tomedium sand, some clay

SILTY SAND with GRAVEL - medium dense, moist, gray,fine to medium-grained, some coarse, slate gravel (up to 1 inchin size)

SILT with SAND - soft, moist, olive brown, very fine sand,trace gravel, some clay

SILTY SAND - medium dense, moist, light brown and gray,fine-grained, trace gravel (up to 1 inch in size)

Becomes brown, fine to medium-grained, with thinlayers of Sandy Silt

QUATERNARY OLDER ALLUVIUM [Qalo]SANDY LEAN CLAY - hard, moist, brown to gray, fine tocoarse sand, slate gravel (up to 3/4 inch in size)

SILT with SAND - stiff, moist, olive brown to gray, with thinlayers of fine 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


258 feet

G-149

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_(

140-

160)

.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 3/31/2011Checked/Date: LT/PE 9/19/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

215

210

205

200

195

190

185

180

23.6

20.8

18.1

14.9

20.9

24.0

16.4

12.9

12.6

22.2

-

23.9

24.4

28.4

25.9

62

35

32

86

49

SM

ML

ML

CL

SM

ML

SM

CL

SM

CL

2.3

1.9

4.3

0.7

2.3

7.5

1.4

5.8

2.1

1.7

1.2

2.1

1.5

2.7

29

22

28

40

81

45

39

40

-

107

106

-

105

-

114

-

122

-

-

-

101

-

97

13

21

28

93

23

24

27

Gray to brown, trace fine sand, trace ironoxide stains

Becomes olive graySILTY SAND - medium dense, wet, brown, fine tocoarse-grained, trace gravel (up to 1/4 inch in size)

SANDY SILT - very stiff, moist, olive gray, very fine sand,trace gravel

SILT with SAND - very stiff, moist, olive gray, trace gravel (upto 1/4 inch in size), some clay

Iron oxide stains

LEAN CLAY - very stiff, moist, reddish brown to gray, withthin layer of sand

SILTY SAND with GRAVEL - dense, wet, brown and gray,fine-grained, gravel (up to 3/4 inch in size)

SANDY SILT with GRAVEL - hard, moist, olive gray, finesand, some coarse, gravel (up to 1/2 inch in size)SILTY SAND - very dense, moist, brown, fine tocoarse-grained, trace gravel (up to 1/2 inch in size), trace clay

LEAN CLAY - very stiff, moist, dark brown, trace sand, tracegravel (up to 3/8 inch in size)


Dark brown to gray

SILTY SAND - dense, moist, brown, trace gravel (up to 3/8inch in size), some clay

LEAN CLAY - very stiff to hard, moist, dark brown to 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


258 feet

G-149(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_(

140-

160)

.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)

175

170

165

160

155

150

145

140

15.4

17.6

13.5

15.8

28.0

19.3

31.4

24.0

17.9

24.0

12.0

52

56

SC

SM

ML

SM

SM

1.9

2.9

2.7

1.4

1.7

1.3

1.5

0.9

1.2

43

50

46

70

73

-

110

-

110

-

100

-

101

-

101

-

43

88

32

34

62

92/10"

Becomes Sandy Lean Clay, gravel (up to 3/8 inch in size)

CLAYEY SAND with GRAVEL - very dense, brown, gravel(up to 1 inch in size)SILTY SAND - very dense, moist, brown, fine tocoarse-grained, with gravel

Thin layers of Clay

SILT - hard, moist, brown to gray, with thin layers of sand,some clay

Thin layer of Silty Sand, brown, fine to medium-grained

Thin layer of Lean Clay, dark brown

Becomes dark brown

SILTY SAND with GRAVEL - very dense, wet, brown, fine tocoarse-grained, gravel (up to 1/4 inch in size)

SILTY SAND - very dense, wet, brown, fine tomedium-grained, trace gravel (up to 1 inch in size)

Becomes fine-grained

Coarse gravel layer

Becomes fine to coarse-grained, trace gravel(up to 1/2 inch in size)

END OF BORING AT 111½ FEETNOTES:Hand augered upper 5 feet due to utilities. Borehole groutedwith cement-bentonite slurry and patched with asphaltconcrete.




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


258 feet

G-149(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_(

140-

160)

.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.




Tun

nel

ELEV

ATI

ON

(ft)

260

255

250

245

240

235

230

21.3

-

21.0

10.8

14.9

31.7

16.2

54

SP

ML

CL

ML

GP

CL

CL

SP

SC

0.0

0.0

0.0

0.0

0.0

0.0

Push

8

28

20

102

-

98

-

117

-

109

7

7

19

4-inch thick Asphalt Concrete over 12-inch thick PortlandCement ConcreteFILL [Af] - POORLY GRADED SAND with GRAVEL

QUATERNARY YOUNGER ALLUVIUM [Qal]SANDY SILT - moist, gray

LEAN CLAY - very soft, moist, dark brown

Becomes medium stiff, (Sample not recovered)

SILT with SAND - medium stiff, moist, brown

POORLY GRADED GRAVEL - loose, moist, slate gravelfragments (up to 3/4 inch in size), with sandQUATERNARY OLDER ALLUVIUM [Qalo]SANDY LEAN CLAY - very stiff, moist, reddish brown, tracegravel (up to 1/4 inch in size), iron oxide stains


LEAN CLAY - very stiff, moist, dark brown

POORLY GRADED SAND - medium dense, moist, brown,fine to coarse-grained, trace fine gravel

CLAYEY SAND - medium dense, moist, brown

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 DRILLED1/31/2011 - 2/2/2011GROUND-WATER READINGSDrilling mud bailed on 2/2/2011. Ground-water level measured at 22 feet belowthe ground surface 30 minutes after bailing of drilling mud.

BOREHOLE LOCATION


265 feet

G-150

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_(

140-

160)

.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 3/31/2011Checked/Date: LT/PE 9/19/2011

Project No.: 4953-10-1561




ELEV

ATI

ON

(ft)

220

215

210

205

200

195

190

18.1

21.6

23.9

18.4

14.8

23.7

35

75

41

24

78

CL

SM

CL

SC

SM

CH

0.0

0.0

0.0

0.0

0.3

0.0

26

28

53

27

-

106

-

110

113

102

20

20

Becomes gray to brown, fine to coarse-grained,trace fine gravel (up to 3/8 inch in size)

LEAN CLAY - very stiff, moist, olive brown, trace sand, tracegravel (up to 1/4 inch in size)

SILTY SAND with GRAVEL - medium dense, moist, gray tobrown, fine to coarse-grainedLEAN CLAY with SAND - very stiff, moist, gray

CLAYEY SAND - medium dense, moist, brown to grayishbrown, trace slate gravel (up to 1-1/2 inches in size)


SILTY SAND - very dense, moist, brown, fine tomedium-grained, some coarse, trace gravel


SANDY FAT CLAY - very stiff, moist, dark brown and 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


265 feet

G-150(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_(

140-

160)

.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

Tun

nel

ELEV

ATI

ON

(ft)

180

175

170

165

160

155

150

29.5

18.3

19.7

18.4

22.5

26

SM

SM

SP

CL

0.3

0.0

0.0

0.0

0.1

27

35

45

75

93

-

103

-

103

66

SILTY SAND - medium dense, wet, gray to brown, fine tomedium-grained

Becomes very dense, brown

SILTY SAND with GRAVEL - dense, moist, brown, fine tocoarse-grained, gravel (up to 1/4 inch in size)

POORLY GRADED SAND - dense, wet, gray to brown, fineto medium-grained, some coarse sand(Sample disturbed)

SANDY LEAN CLAY - hard, moist, brown

END 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.



**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


265 feet

G-150(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_(

140-

160)

.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.




PMT

ELEV

ATI

ON

(ft)

270

265

260

255

250

245

240

235

19.6

22.6

15.5

10.4

15.0

28.3

12

SM

SM

CL

CL

SM

ML

SW-SM

SM

ML

SM

0.8

5.4

3.7

4.7

3.9

13.1

14

7

25

103

-

104

-

110

-

8

18

8

5-inch thick Asphalt Concrete over 6-inch thick PortlandCement Concrete and 4-inch thick Base CourseFILL [Af]SILTY SAND - moist, light brown to brown, fine tomedium-grained, some coarse, trace slate gravel

QUATERNARY YOUNGER ALLUVIUM [Qal]SILTY SAND - moist, brown, fine to medium-grained

LEAN CLAY - stiff, moist, dark olive brown, trace slate gravel(up to 1/4 inch in size)

QUATERNARY OLDER ALLUVIUM [Qalo]LEAN CLAY - medium stiff, olive brown

SILTY SAND - loose, moist, olive brown, fine tomedium-grained, some coarse, some gravelSILT - moist, olive brown, some clay

WELL GRADED SAND with SILT - medium dense, moist,gray, fine to coarse-grained, some gravel (up to 1/2 inch insize)

SILTY SAND - medium dense, moist, olive brown, fine tomedium-grained, some coarse

SANDY SILT - medium stiff, moist, gray, with sand lenses

SILTY SAND - loose, moist, gray, fine to medium-grained,trace 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


271 feet

G-152

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_(

140-

160)

.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)

230

225

220

215

210

205

200

195

15.6

-

8.3

10.8

10.3

4.9

30.9

19.2

18.8

23.9

22.2

27.4

15.3

16

39

59

82

64

50

SW

SM

ML

SM

CL

CH

CL

3.0

8.5

8.7

3.0

9.6

5.1

4.5

7.0

3.7

3.7

57

38

55

49

10

29

54

67

57

107

-

-

116

-

116

88

-

99

97

-

95

112

44

50/6"

28

22

Becomes wet, brownish gray, some coarse sandWELL GRADED SAND with GRAVEL - dense, wet, brown,fine to coarse-grained


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

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

SILT - hard, moist, reddish brown

SILTY SAND - loose, wet, light to dark brown, fine tomedium-grained, some coarse, trace gravel (up to 1/2 inch insize), with thin layers of Clayey Silt

Slate gravel (up to 1 inch in size)

Becomes medium dense, thin layer of Well Graded Sandwith gravel (up to 1 inch in size)

SANDY LEAN CLAY - very stiff, moist, olive brown, tracegravel (up to 1/2 inch in size), with thin layers of Silty Sand

Becomes hard

FAT CLAY - very stiff, moist, dark and reddish brown, tracesand, trace gravel

Becomes hard

SANDY LEAN CLAY - hard, moist, brown, trace gravel (upto 3/8 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


271 feet

G-152(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_(

140-

160)

.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

NV

Tun

nel

ELEV

ATI

ON

(ft)

190

185

180

175

170

165

160

155

14.0

11.1

13.3

20.0

19.5

15.0

17.1

21.8

15.1

14.5

26SC

SM

SW

MH

CL

ML

SW

SP

SM

1.4

6.5

3.6

5.8

4.3

4.9

4.3

2.9

3.2

75

45

52

42

49

-

123

-

105

-

115

-

105

-

117

55

50/5"

41

42

59

CLAYEY SAND with GRAVEL - very dense, wet, brown, fineto medium-grained, some coarse, gravel (up to 1 inch in size)

Increase in gravel content

SILTY SAND - very dense, very moist, brown, fine tocoarse-grained, gravel (up to 1/4 inch in size)WELL GRADED SAND - very dense, wet, gray, fine tocoarse-grained, with gravel (up to 3/4 inch in size)

ELASTIC SILT - hard, moist, olive gray to gray, trace sand,calcium carbonate nodules


SANDY LEAN CLAY - hard, moist, brown, with gravel (up to1/4 inch in size)

SANDY SILT - hard, moist, brown, some clay

WELL GRADED SAND - wet, brown, fine to coarse-grained,with gravel (up to 1/4 inch in size)

POORLY GRADED SAND - very dense, moist, fine tocoarse-grained, trace gravel (up to 1/4 inch in size)

SILTY SAND - dense, moist, reddish brown, fine tocoarse-grained, trace gravelEND OF BORING AT 111 FEETNOTES:Hand augered upper 9 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.



**Photo Ionization Detector used for OVA readingsDownhole 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


271 feet

G-152(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_(

140-

160)

.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)

270

265

260

255

250

245

240

235

16.2

16.2

21.9

26.8

16.6

17.3

19.1

13.4

17.1

21.6

78

46

ML

ML

CL

ML

CL

SM

CH

9.3

5.1

8.6

11.8

9.2

8.7

12.2

5.3

11.6

10.9

8

16

90/10"

88/10"

55

20

103

-

100

-

114

110

-

113

-

103

24

14

26

42

Grass SurfaceFILL [Af]SANDY SILT - moist, brown to dark brown

QUATERNARY YOUNGER/OLDER ALLUVIUM [Qalo]SILT with SAND - medium stiff, moist, dark brown, slightlyporous, some clay

SANDY LEAN CLAY - very stiff, moist, dark brown

Becomes stiff, dark olive brown, trace sand

QUATERNARY OLDER ALLUVIUM [Qalo]SILT with SAND - stiff, moist, gray, some clay

Becomes hard

LEAN CLAY with SAND - very stiff to hard, moist, brownand gray

Some thin layers of Silty Sand

Trace gravel (up to 3/8 inch in size), thin layer ofSilty Sand

SILTY SAND - dense, moist, brown, fine to medium-grained,trace gravelFAT CLAY - very stiff, moist, gray, trace 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


274 feet

G-154

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_(

140-

160)

.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/WL 10/13/2011Checked/Date: PE/RM 10/13/2011

Project No.: 4953-10-1561




Sant

a M

onic

a / C

entu

ty C

ity S

tatio

n

ELEV

ATI

ON

(ft)

230

225

220

215

210

205

200

195

16.9

12.6

17.3

11.1

9.1

10.3

1.7

10.3

30.1

18.5

21.6

26.3

21.9

24.0

27.1

33.7

31

24

14

16

ML

SC

CL

SM

GW

GC

GW

SM

ML

CL

SM

ML

CL

ML

CL

10.0

11.4

7.2

12.0

10.2

11.8

8.5

10.2

10.5

10.1

5.6

9.8

7.8

9.2

68

85/8"

68

87

36

37

32

32

-

115

-

118

-

129

-

119

-

110

-

99

-

93

-

87

26

37

58

83

23

29

25

39

SILT - very stiff, moist, brown and gray, trace sand, tracegravel (up to 1/4 inch in size), some clay

CLAYEY SAND with GRAVEL - very dense, moist, brownand gray, fine-grained, gravel (up to 3/4 inch in size)

LEAN CLAY with GRAVEL - hard, moist, brown and gray,gravel (up to 1/2 inch in size)Coarse gravel (6 inch layer)

SILTY SAND with GRAVEL - very dense, moist, brown andgray, fine to coarse-grained, gravel (up to 1/2 inch in size)

WELL GRADED GRAVEL - very dense, moist, gray, gravel(up to 3/4 inch in size)

CLAYEY GRAVEL with SAND - very dense, wet, brown, fineto coarse-grained, gravel (up to 3/4 inch in size)

WELL GRADED GRAVEL - very dense, brown, gravel (up to1 inch in size), very little recovery

SILTY SAND with GRAVEL - very dense, wet, brown andgray, fine to coarse-grained, gravel (up to 3/4 inch in size)

SILT - very stiff, wet, olive brown, trace sand, trace iron oxidestains, some clay

LEAN CLAY with SAND - very stiff to hard, moist, brownand gray

Iron oxide stains

SILTY SAND - dense, wet, olive brown, fine-grained

SANDY SILT - very stiff, very moist, olive brown, some clay

LEAN CLAY - very stiff, moist, olive brown

SILT - hard, moist, brown and gray, some clay

Thin layer of Silty Sand, fine-grained

LEAN CLAY with SAND - very stiff, moist, olive 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


274 feet

G-154(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_(

140-

160)

.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




Sant

a M

onic

a / C

entu

ty C

ity S

tatio

n

ELEV

ATI

ON

(ft)

190

185

180

175

170

165

160

155

21.4

33.2

17.4

SM

CL

8.0

7.2

8.1

28

-

93

-

43

36

SILTY SAND - dense, wet, grayish brown, fine-grained

LEAN CLAY - very stiff, moist, dark gray, trace sand

Becomes hard, brown and gray, with sand,trace gravel (up to 1 inch in size), iron oxide stains


NOTES:

Hand augered upper 6 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry.




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


274 feet

G-154(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_(

140-

160)

.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)

280

275

270

265

260

255

250

245

9.6

17.3

15.7

16.1

33.5

15.4

14.2

13.7

12.0

15.9

23.6

21.8

31.2

-

36

42

90

SM

SM

CL

SC

CL-ML

SM

ML

SM

ML

CH

CL

1.9

2.1

4.7

1.7

3.2

2.1

2.5

1.5

2.1

1.2

2.6

1.2

2.8

1.4

12

17

11

14

28

26

16

32

-

106

-

108

-

104

-

117

-

112

-

100

-

-

12

15

14

20

20

17

8-inch thick Grass Surface, No Base CourseFILL [Af]SILTY SAND - moist, brown, fine to medium-grained, somegravel, layer of base course

QUATERNARY YOUNGER ALLUVIUM [Qal]SILTY SAND with GRAVEL - loose, moist, brownish red,fine to coarse-grained, fine gravel (up to 1/4 inch in size)

Becomes medium dense, trace gravel

SANDY LEAN CLAY - stiff, moist, brown, fine to mediumsand

CLAYEY SAND - loose, moist, brown, fine tomedium-grained, some coarseQUATERNARY OLDER ALLUVIUM [Qalo]SILTY CLAY - stiff, moist, brown, trace fine sand

SILTY SAND - medium dense, moist, olive brown, fine tomedium-grained, some coarse, trace fine gravel (up to 1/2 inchin size)

SILT - stiff, moist, brown, some fine sand, thin layers of SiltyClay

SILTY SAND - medium dense, moist, brown, fine tomedium-grained, some gravel (up to 1/4 inch in size)


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

FAT CLAY - very stiff, moist, dark brown, trace fine sand

LEAN CLAY with SAND - hard, moist, brown, very finesand, trace 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

C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED2/14/2011 - 2/15/2011GROUND-WATER READINGSGround-water level measured at 27 feet and 45 feet below the ground surface inshallow and deep monitoring wells, respectively on 6/10/2011. See last page ofthis boring for details.

BOREHOLE LOCATION


282 feet

G-156

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_(

140-

160)

.GPJ

10/

24/1

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)

240

235

230

225

220

215

210

205

26.4

-

26.6

16.2

18.3

14.5

22.0

7.2

13.0

13.5

15.2

9.4

21.2

23.5

2.1

15.5

82

63

58

21

19

28

CL

SM

ML

SM

GW

SM

CL-ML

SM

ML

2.8

3.6

1.0

2.3

1.0

2.8

1.5

2.5

1.4

2.1

1.0

2.4

0.8

1.5

0.8

26

46

51

65/6"

75/6"

100/10"

47

38

-

-

-

110

-

113

-

118

-

112

-

123

-

96

-

116

23

25

25

92/11"

76

81

65

57/6"

Becomes very stiff


SANDY LEAN CLAY - hard, moist, light brown, fine sand

Very stiff, trace gravel (up to 3/8 inch in size)

SILTY SAND - dense, very moist, brown, fine tomedium-grained, some coarseSANDY SILT - moist, brown, fine sand

SILTY SAND with GRAVEL - very dense, very moist, brown,fine to coarse-grained, gravel (up to 1/4 inch in size)

Gravel (up to 1 inch in size)

Gravel (up to 3/4 inch in size)

WELL GRADED GRAVEL - very dense, wet, fine tocoarse-grained, gravel (up to 1 inch in size)

SILTY SAND - very dense, wet, brown, fine to coarse-grained,trace gravel (up to 1/2 inch in size)

SILTY CLAY - hard, moist, grayish brown, trace fine sand

SILTY SAND with GRAVEL - very dense, moist, brown, fineto medium-grained, slate gravel (up to 2 inches in size)

SILT - hard, wet, grayish dark brown, trace fine sand, tracegravel, 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


282 feet

G-156(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_(

140-

160)

.GPJ

10/

24/1

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)

200

195

190

185

180

175

170

165

17.1

23.5

15.6

12.9

-

6.9

21.7

23.5

8.9

CL-ML

CL

SW

ML

CL-ML

CL

2.1

0.8

2.5

0.5

0.7

1.9

1.0

1.5

60

46

81

50

-

101

-

108

-

122

-

100

-

27

41

50

41

28

SILTY CLAY - very stiff, moist, gray, with layers of Silt

Becomes hard

Trace gravel

SANDY LEAN CLAY - hard, moist, light brown, fine sand


WELL GRADED SAND with GRAVEL - very dense, wet,dark gray, fine to coarse-grained

SANDY SILT - moist, brown to gray, fine sand

SILTY CLAY - hard, moist, brown to gray

Alternating with clay layers

Thin layer of Silty Sand, brown

SANDY LEAN CLAY - hard, moist, gray and brown, finesand

Some 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


282 feet

G-156(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_(

140-

160)

.GPJ

10/

24/1

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




Tun

nel

ELEV

ATI

ON

(ft)

160

155

150

145

140

135

130

125

11.21.4 70121Becomes hard

END OF BORING AT 121 FEET

NOTES:

Montoring well was installed on 2/15/2011. See wellconstruction diagram for G-156.




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


282 feet

G-156(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_(

140-

160)

.GPJ

10/

24/1

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)

275

270

265

260

255

250

245

240

16.4

26.0

16.0

16.9

14.2

22.9

18.6

ML

ML

SM

CL

11.3

8.7

7.6

9.4

9.6

8.8

6.5

8/4"

11

31

27

100

-

103

-

116

-

109

14

11

26

12-inch thick Asphalt Concrete over 12-inch thick PortlandCement Concrete, No Base CourseFILL [Af]

QUATERNARY OLDER ALLUVIUM [Qalo]SILT with SAND - medium stiff, moist, olive brown and gray

SANDY SILT - stiff, moist, brown and gray

SILTY SAND - loose, wet, brown, fine to medium-grained,trace gravel

SANDY LEAN CLAY - stiff, moist, gray and brown, tracegravel (up to 3/4 inch in size), scattered calcium carbonatenodules

Becomes very stiff, trace gravel (up to 1/4 inch in size)

Decrease in sand content, becomes olive gray,trace iron oxide stains

Becomes brown

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


276 feet

G-159

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_(

140-

160)

.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)

235

230

225

220

215

210

205

200

19.3

21.4

20.8

19.2

20.0

16.6

19.4

36.7

78

50

39

91

MH

CL

SM

CL

SC

CL

SM

8.5

3.9

8.1

8.6

4.3

8.5

7.6

4.8

29

35

71

53

-

103

-

101

-

112

-

87

22

29

43

52

ELASTIC SILT with SAND - very stiff, moist, gray

LEAN CLAY with SAND - hard, moist, brown and gray, tracegravel (up to 1/8 inch in size)

SILTY SAND - very dense, moist, brown, fine tomedium-grained, trace gravel (up to 3/8 inch in size), with clay

SANDY LEAN CLAY - hard, moist, brownish gray

CLAYEY SAND - very dense, moist, brown, fine tocoarse-grained, gravel (up to 3/8 inch in size)

LEAN CLAY - hard, moist, brown, trace sand

SILTY SAND - dense, wet, light brown, fine tomedium-grained, trace 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


276 feet

G-159(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_(

140-

160)

.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)

195

190

185

180

175

170

165

160

23.4

16.2

15.7

-

24.5

18.0

19.4

31.3

63

50

CH

SC

SM

ML

CL

5.9

5.0

4.3

-

4.7

5.6

3.6

4.2

48

80/10"

44

51

-

113

-

-

-

111

-

87

74

90/11"

47

37

SANDY FAT CLAY - hard, moist, gray, trace calciumcarbonate nodules, trace gravel


CLAYEY SAND - very dense, moist, gray, fine tomedium-grained, trace iron oxide stains, trace gravel (up to 1/8inch in size)

SILTY SAND - very dense, moist, brown, fine tomedium-grained, some coarse sand and gravel(Sample not recovered)

SANDY SILT - hard, very moist, olive brown, trace iron oxidestains

LEAN CLAY with SAND - hard, moist, gray, some calciumcarbonate nodules

Becomes dark gray

Coarse gravel 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


276 feet

G-159(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_(

140-

160)

.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




Tun

nel

ELEV

ATI

ON

(ft)

155

150

145

140

135

130

125

120

26.85.5 -39 Becomes light greenish gray, trace sand


NOTES:





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


276 feet

G-159(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_(

140-

160)

.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)

255

250

245

240

235

230

225

220

15.3

25.4

-

23.5

24.6

27.3

-

SC

CL

CL

SM

CL

ML

SM

SM

0.0

0.0

0.2

0.1

0.0

0.0

Push

18

4

30

109

-

-

-

94

-

-

10

5

10

4-inch thick Asphalt Concrete over 12-inch thick PortlandCement Concrete and 2-inch thick Base CourseFILL [Af]CLAYEY SAND - moist, gray

SANDY LEAN CLAY - moist, dark brown, trace brickfragmentsQUATERNARY YOUNGER ALLUVIUM [Qal]LEAN CLAY - very soft, moist, gray

Becomes stiff, dark olive brown

SILTY SAND with GRAVEL - medium dense, moist, olivebrown, fine to medium-grained, gravel (up to 1/4 inch in size),some clay, sample disturbed

LEAN CLAY with SAND - soft, moist, olive brown

SANDY SILT - stiff, moist to wet, olive grayQUATERNARY OLDER ALLUVIUM [Qalo]SILTY SAND - loose, wet, gray, fine-grained

Becomes medium dense, some gravel(Sample not recovered)

SAM

PLE

LOC

.

Sta 681+50, Rt 20 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


BOREHOLE LOCATION


258 feet

G-161

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_(

161-

181)

.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)

215

210

205

200

195

190

185

180

18.0

-

10.8

28.0

16.9

23.0

17.9

24.1

19

17

80

SP

ML

SC

ML

SM

CL

CL

0.0

0.2

0.0

0.0

0.1

0.0

0.0

30

11

28

30

-

-

-

93

-

102

-

102

25

62

50

38

SILTY SAND with GRAVEL - medium dense, moist to wet,grayish brown, fine to medium-grained, gravel (up to 1/4 inchin size), with layers of Poorly Graded Sand


Becomes very dense, dark gray, gravel (up to 1 inch in size)

POORLY GRADED SAND - medium dense, moist, brown,fine to medium-grained

SILT - stiff, moist, brown, trace sand

CLAYEY SAND - moist, olive brown, fine-grained

SILT - hard, moist, olive brown to olive gray

SILTY SAND - wet, olive gray

LEAN CLAY - very stiff, moist, olive gray, trace sand

Becomes hard, gray, trace gravel (up to 1/4 inch in size)

LEAN CLAY with SAND - very stiff, moist, gray, fine sand

SAM

PLE

LOC

.

Sta 681+50, Rt 20 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


BOREHOLE LOCATION


258 feet

G-161(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_(

161-

181)

.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




Documents

DRILLING COMPANY/DRILLING EQUIPMENT …media.metro.net/projects_studies/westside/images/final...Tri County Drilling / CME 75 DRILLING METHOD Rotary Wash DATES DRILLED 5/9/2011 - 5/11/2011