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ELEV
ATI
ON
(ft)
90
85
80
75
70
65
60
55
35.6
31.3
37.5
35.6
35.0
96
2.9
2.7
1.2
4.9
5.6
60
58
60
85
-
78
-
80
41
42
Trace very fine sand
END OF BORING AT 141 FEET
NOTES:
Hand augered upper 5 feet to avoid damage to utilities.Montoring well was installed on 5/11/2011. See wellconstruction diagram for G-109.
"N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches
*Number of blows required to drive the Crandall Sampler12 inches using a 300 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
Downhole Test: PMT = Pressuremeter
SAM
PLE
LOC
.
Sta 442+30, Lt 45 feetHOLE DIAMETER4-7/8 inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSGround-water level measured at 28½ feet and 41 feet below the ground surfacein shallow and deep monitoring wells, respectively on 7/29/2011. See last pageof this boring for details.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
212 feet
G-109(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
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IELD
NO
TES\
GIN
T LO
G\N
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EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
125
130
135
140
145
150
155
160
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561 Figure: A-2.9dMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
210
205
200
195
190
185
180
175
16.3
25.7
23.8
14.2
10.5
13.7
30.6
11
ML
ML
CH
SW-SM
CH
8.5
7.2
5.2
5.9
4.1
6.8
5.4
15
18
36
25
113
-
96
-
107
-
90
15
29
48
7½-inch thick Asphalt Concrete over 5-inch thick PortlandCement ConcreteFILL [Af]SANDY SILT - moist, olive, fine sand, some clay, slightlyporous
Thin layer of Silty SandLAKEWOOD FORMATION [Qlw]SILT - stiff, moist, light brown, slightly porous, some clay
FAT CLAY with SAND - stiff, moist, light brown, fine tomedium sand
WELL GRADED SAND with SILT - medium dense, moist,olive, fine to medium-grained, some coarse sand, trace gravel(up to 1/4 inch in size)
Becomes olive yellow
Becomes dense, more silt, some gravel (up to 1/4 inch in size)
FAT CLAY with SAND - very stiff, moist, light brown andblueish gray
SAM
PLE
LOC
.
Sta 450+30, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/28/2011 - 5/2/2011GROUND-WATER READINGSDrilling mud bailed on 4/29/2011. Ground-water level measured at 31 feet belowthe ground surface on 5/2/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
212 feet
G-110
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 8/9/2011Checked/Date: JAG/PE 9/28/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.10aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
170
165
160
155
150
145
140
135
33.0
24.8
29.8
13.7
18.6
15.1
22.3
47.3
8
9
98
CL
SM
ML
SP-SM
7.2
6.8
6.1
6.1
3.8
4.7
4.5
5.2
25
63
57
60
-
99
-
-
-
110
-
72
24
23
52
76
Becomes blueish gray
SAN PEDRO FORMATION [Qsp]SANDY LEAN CLAY - very stiff, moist, light olive gray, fineto medium sand
SILTY SAND - moist, blueish gray, fine to medium-grained
SILT - moist, bluish gray, trace fine sand, some clay
POORLY GRADED SAND with SILT - very dense, olivegray, fine to medium-grained
Becomes dense, trace shell fragments
FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, greenish gray, trace fine sand,weakly cemented
SAM
PLE
LOC
.
Sta 450+30, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/28/2011 - 5/2/2011GROUND-WATER READINGSDrilling mud bailed on 4/29/2011. Ground-water level measured at 31 feet belowthe ground surface on 5/2/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
212 feet
G-110(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 8/9/2011Checked/Date: JAG/PE 9/28/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.10bMTA Westside Subway Extension
Los Angeles, California
PMT
PMT
ELEV
ATI
ON
(ft)
130
125
120
115
110
105
100
95
45.8
48.6
34.7
38.8
45.7
33.0
37.4
40.5
95
99
98
99
2.9
3.7
1.4
7.6
6.3
6.3
6.1
1.5
34
50
46
51
-
69
-
79
-
86
-
79
62
37
38
31
Becomes grayish green
(½-inch thick cemented layer)
(3 feet thick very hard cemented layer)
SAM
PLE
LOC
.
Sta 450+30, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/28/2011 - 5/2/2011GROUND-WATER READINGSDrilling mud bailed on 4/29/2011. Ground-water level measured at 31 feet belowthe ground surface on 5/2/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
212 feet
G-110(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 8/9/2011Checked/Date: JAG/PE 9/28/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.10cMTA Westside Subway Extension
Los Angeles, California
PMT
Tun
nel
ELEV
ATI
ON
(ft)
90
85
80
75
70
65
60
55
37.0
38.0
41.8
991.4
5.6
8.5
69
40
48
80
82
78END OF BORING AT 131 FEET
NOTES:
Hand augered upper 5 feet to avoid damage to utilites.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.
"N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches
*Number of blows required to drive the Crandall Sampler12 inches using a 140 pound hammer falling 30 inches
**Photo Ionization Detector used for OVA readings
Downhole Test: PMT = Pressuremeter
SAM
PLE
LOC
.
Sta 450+30, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/28/2011 - 5/2/2011GROUND-WATER READINGSDrilling mud bailed on 4/29/2011. Ground-water level measured at 31 feet belowthe ground surface on 5/2/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
212 feet
G-110(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
125
130
135
140
145
150
155
160
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 8/9/2011Checked/Date: JAG/PE 9/28/2011
Project No.: 4953-10-1561 Figure: A-2.10dMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
190
185
180
175
170
165
160
13.6
-
18.7
20.7
25.0
28.4
16.4
52
SM
ML
GW
ML
SM
CL
ML
SP
ML
30
15.6
7.9
10.2
9.5
10.4
25
37
16
37
103
-
107
-
93
-
106
27
16
35
6-inch thick Asphalt Concrete over 8-inch thick PortlandCement Concrete and 4-inch thick Base CourseFILL [Af]SILTY SAND - moist, brown, fine to medium-grained, tracecoarseLAKEWOOD FORMATION [Qlw]SANDY SILT - very stilff, moist, olive yellow to brown, finesand, trace calcium carbonate nodules
WELL GRADED GRAVEL - medium dense, moist, gravel (upto 3 inches in size)(Sample not recovered)
SANDY SILT - hard, light brown, fine sand, trace gravel (upto 3 inches in size)
SILTY SAND - moist, light grayish brown to light olive,fine-grained
SANDY LEAN CLAY - very stiff, moist, light brown, fine tomedium sand
Trace mica
SANDY SILT - stiff, moist, light brown, fine sand
Becomes light olive, trace iron oxide stains
Becomes hard, olive gray
POORLY GRADED SAND - dense, wet, light olive, fine tomedium-grained, trace coarse sand, trace gravel (up to ½ inchin size)
SAN PEDRO FORMATION [Qsp]SILT - very stiff, moist, greenish gray, some clay
SAM
PLE
LOC
.
Sta 457+95, 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 DRILLED5/12/2011 and 5/13/2011GROUND-WATER READINGSDrilling mud bailed on 5/12/2011. Ground-water level measured at 28 feet belowground surface on 5/13/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
195 feet
G-111
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 6/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.11aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
150
145
140
135
130
125
120
52.0
25.2
21.3
14.3
15.7
23.3
21.7
28.3
58
9
15
CL
SP-SM
SM
>3000
>3000
3.0
3.6
>3000
3.9
>3000
3.6
27
54
80
62
-
92
-
110
-
97
-
90
28
32
47
53
(Sample not recovered)
More fine sand
SANDY LEAN CLAY - hard, very moist, greenish gray, finesand, occasional medium
POORLY GRADED SAND with SILT - dense, wet, light gray,fine to medium-grained, trace coarse, slight hydrogen sulfideodor
Becomes greenish gray
Becomes very dense, fine-grained, occasional medium
Trace fine gravel
SILTY SAND - very dense, wet, gray, fine-grained, somemedium and coarse, occasional gravel (up to 3/8 inch in size),trace mica
Slight hydrogen sulfide odor
SAM
PLE
LOC
.
Sta 457+95, 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 DRILLED5/12/2011 and 5/13/2011GROUND-WATER READINGSDrilling mud bailed on 5/12/2011. Ground-water level measured at 28 feet belowground surface on 5/13/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
195 feet
G-111(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
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ICA
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.2 A
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IELD
NO
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G\N
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EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 6/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.11bMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
110
105
100
95
90
85
80
19.3
17.5
59.8
39.4
46.8
34.8
93
98
ML>2550
>2550
>3000
>3000
>3000
>1550
26
34
35
-
86
-
79
-
83
38
40
35
SILT - hard, wet, dark gray, trace fine sand, occasionalmedium, trace clayFERNANDO FORMATION [Tf]SILTSTONE - very stiff to hard, moist, dark olive gray to darkgreenish gray, occasional fine sand, interbeded with sandlayers, trace calcium carbonate nodules, weakly cemented
Becomes dark greenish gray, trace fine sand
END OF BORING AT 106 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 Sampler12 inches using a 300 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
SAM
PLE
LOC
.
Sta 457+95, 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 DRILLED5/12/2011 and 5/13/2011GROUND-WATER READINGSDrilling mud bailed on 5/12/2011. Ground-water level measured at 28 feet belowground surface on 5/13/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
195 feet
G-111(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: YN 6/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561 Figure: A-2.11cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
195
190
185
180
175
170
165
15.9
16.1
20.8
29.5
25.2
19.2
SM
CL
SM
CL
ML
SMCL
SM
0.0
0.0
0.0
0.0
0.0
0.0
15
7
18
101
-
102
-
97
-
35
22
36
6-inch thick Asphalt Concrete over 10-inch thick PortlandCement Concrete, No Base CourseFILL [Af]SILTY SAND - moist, light brown, fine-grained, trace mediumto coarseQUATERNARY YOUNGER ALUVIUM [Qal]SANDY LEAN CLAY - stiff, moist, light brown and traceolive yellow, medium to coarse sand, trace fine gravel (up to1/2 inch in size)
Becomes brown
LAKEWOOD FORMATION [Qlw]SILTY SAND - dense, moist, olive brown, fine-grained, tracemedium, trace fine gravel (up to 1/2 inch in size)
Becomes medium to coarse-grained, more gravel
LEAN CLAY with SAND - very stiff, moist, light gray to lightolive, fine to coarse sand, trace fine gravel, some rootlets
Trace calcium carbonate nodules and iron oxide stains
SANDY SILT - moist, light brown
SILTY SAND - wet, light brownSANDY LEAN CLAY - moist, light brown, trace gravel (up to½ inch in size), trace calcium carbonate nodules
SILTY SAND - medium dense, moist, light olive brown, fineto medium-grained, some coarse, trace calcium carbonatenodules, trace iron oxide stains
SAM
PLE
LOC
.
Sta 473+50, Lt 30 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 DRILLED5/11/2011 and 5/12/2011GROUND-WATER READINGSDrilling mud bailed on 5/11/2011. Ground-water level measured at 18 feet belowthe ground surface on 5/12/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
200 feet
G-112
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 9/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.12aMTA Westside Subway Extension
Los Angeles, California
PMT
Wils
hire
/ L
a B
rea
Stat
ion
ELEV
ATI
ON
(ft)
155
150
145
140
135
130
125
21.0
20.0
27.2
24.3
23.9
20.5
47
8
9
CH
ML
SP-SM
0.0
0.0
0.3
0.0
0.0
0.0
11
12
27
105
-
97
-
100
-
68
27
76
Trace gravel (up to 3/8 inch in size)
SAN PEDRO FORMATION [Qsp]FAT CLAY - hard, olive, some fine sand, trace medium tocoarse, trace fine gravel (up to 3/4 inch in size), trace mica
SANDY SILT - stiff, moist, greeenish gray, fine sand, tracemedium, trace calcium carbonate nodules
Becomes very stiff, more sand, some clay
POORLY GRADED SAND with SILT - medium dense, wet,gray, fine to medium-grained
Becomes very dense, fine-grained, some medium
SAM
PLE
LOC
.
Sta 473+50, Lt 30 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 DRILLED5/11/2011 and 5/12/2011GROUND-WATER READINGSDrilling mud bailed on 5/11/2011. Ground-water level measured at 18 feet belowthe ground surface on 5/12/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
200 feet
G-112(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 9/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.12bMTA Westside Subway Extension
Los Angeles, California
PMT
PMT
Wils
hire
/ L
a B
rea
Stat
ion
ELEV
ATI
ON
(ft)
115
110
105
100
95
90
85
24.3
25.8
28.4
37.6
42.8
45.8
36.7
48.0
23
95
SM
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
25
12
13
12
99
-
92
-
76
-
84
-
72
43
55
57
Gravel (up to 3/4 inch in size)
SILTY SAND - very dense, wet, gray, fine-grained, somemedium, occasional gravel
FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, olive gray, trace fine sand, weaklycemented
Small pockets of fine sand, gray
SAM
PLE
LOC
.
Sta 473+50, Lt 30 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 DRILLED5/11/2011 and 5/12/2011GROUND-WATER READINGSDrilling mud bailed on 5/11/2011. Ground-water level measured at 18 feet belowthe ground surface on 5/12/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
200 feet
G-112(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 9/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.12cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
75
70
65
60
55
50
45
57.90.0 1661END OF BORING AT 121 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 Sampler12 inches using a 380 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
Downhole Test: PMT = Pressuremeter
SAM
PLE
LOC
.
Sta 473+50, Lt 30 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 DRILLED5/11/2011 and 5/12/2011GROUND-WATER READINGSDrilling mud bailed on 5/11/2011. Ground-water level measured at 18 feet belowthe ground surface on 5/12/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
200 feet
G-112(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
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G\N
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EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
125
130
135
140
145
150
155
160
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
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ATE
.SU
BSU
RFA
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CO
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ITIO
NS
AT
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OC
ATI
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S A
ND
AT
OTH
ER T
IMES
MA
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IFFE
R.
INTE
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CES
BET
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TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 9/21/2011Checked/Date: LT/PE 9/26/2011
Project No.: 4953-10-1561 Figure: A-2.12dMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
195
190
185
180
175
170
165
160
20.3
23.1
23.6
14.6
14.5
25.7
31.6
63
31
SM
SM
CL
CL-ML
CL
SM
CL
ML
21
31
33
-
99
-
-
-
106
-
11
35
30
1½-inch thick Asphalt Concrete over 12-inch thick PortlandCement Concrete and 2-inch thick Base CourseFILL [Af]SILTY SAND - moist, brown, some gravel
LAKEWOOD FORMATION [Qlw]SILTY SAND - moist, reddish brown
SANDY LEAN CLAY - stiff, moist, brown, trace fine sand
SILTY CLAY with SAND - stiff, moist, brown, fine sand
LEAN CLAY - stiff, moist, brown, trace fine sand, tracecalcium carbonate nodules
SILTY SAND - medium dense, moist, light brown to olive,medium to coarse-grained, trace fine sand
LEAN CLAY with SAND - hard, moist, fine to coarse sand,trace calcium carbonate nodules
Layers of Silty Clay, very stiff, olive, trace fine sand
SILT with SAND - very stiff, moist, greenish gray, fine sand
SAN PEDRO FORMATION [Qsp]
SAM
PLE
LOC
.
Sta 465+60, Lt 15 feetHOLE DIAMETER4-¼ inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
TRI County / CME 75DRILLING METHODRotary WashDATES DRILLED5/23/2011, 5/24/2011, and6/2/2011GROUND-WATER READINGSGround-water level measured at 19 feet below the ground surface on 5/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
198 feet
G-113
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: MHPrepared/Date: YN 6/21/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.13aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
155
150
145
140
135
130
125
120
34.7
24.0
26.1
24.3
-
15.9
-
-
92
84
CH
CL-ML
SP-SM
SW
SM
33
49
97
50/1"
-
-
102
-
-
-
-
-
38
50
50/3"
50/5"
FAT CLAY - very stiff, moist, bluish gray, trace calciumcarbonate nodules
With sand, hard, moist, greenish gray, fine sand
SILTY CLAY - hard, moist, greenish gray, trace sand
POORLY GRADED SAND with SILT - dense, moist, greenishgray, fine to medium-grained
Becomes very dense
WELL GRADED SAND - very dense, moist to wet, greenishgray, fine to coarse-grained, trace fine gravel, trace silt
SILTY SAND - very dense, moist, greenish gray, fine-grained
SAM
PLE
LOC
.
Sta 465+60, Lt 15 feetHOLE DIAMETER4-¼ inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
TRI County / CME 75DRILLING METHODRotary WashDATES DRILLED5/23/2011, 5/24/2011, and6/2/2011GROUND-WATER READINGSGround-water level measured at 19 feet below the ground surface on 5/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
198 feet
G-113(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: MHPrepared/Date: YN 6/21/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.13bMTA Westside Subway Extension
Los Angeles, California
Wils
hire
/ L
a B
rea
Stat
ion
ELEV
ATI
ON
(ft)
115
110
105
100
95
90
85
80
17.7
47.5
34.1
37.0
41.8
39
99
50/1"
67
70
112
-
85
-
81
33
86
Becomes dark greenish gray, trace coarse gravel
FERNANDO FORMATION [Tf]CLAYEY SILTSTONE - hard, moist, dark greenish gray
SILTSTONE - hard, moist, dark greenish gray to dark brown
END OF BORING AT 106 FEET
NOTES:
Hand augered upper 10 feet to avoid damage to utilites.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
.
Sta 465+60, Lt 15 feetHOLE DIAMETER4-¼ inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
TRI County / CME 75DRILLING METHODRotary WashDATES DRILLED5/23/2011, 5/24/2011, and6/2/2011GROUND-WATER READINGSGround-water level measured at 19 feet below the ground surface on 5/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
198 feet
G-113(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: MHPrepared/Date: YN 6/21/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561 Figure: A-2.13cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
195
190
185
180
175
170
165
160
20.7
25.6
24.6
37.7
21.1
24.4
12.4 22
CL
SM
SM
CL
ML
SM
CH
CL-ML
SM
CL
SC
0.0
0.0
0.0
0.0
12
20
20
29
101
-
98
-
104
-
114
10
11
29
8-inch thick Asphalt Concrete over 12-inch thick PortlandCement ConcreteFILL [Af]SANDY LEAN CLAY - moist, olive brown, medium sand
SILTY SAND - moist, olive yellow, fine to coarse-grained,trace fine gravel (up to ½ inch in size)LAKEWOOD FORMATION [Qlw]SILTY SAND - moist, olive yellow, fine-grained, somemedium to coarse
LEAN CLAY - medium stiff, light olive, fine to medium sand
Some coarse sand, trace gravel (up to 1/4 inch in size)
SANDY SILT - moist, olive, fine sand
SILTY SAND - loose, moist, olive yellow, fine tomedium-grained
FAT CLAY with SAND - stiff, moist, light olive, fine sand,trace medium to coarse, some calcium carbonate nodules
SILTY CLAY - stiff, moist to wet, light olive, trace sand
SILTY SAND - medium dense, light olive, fine tomedium-grained, some coarse, trace gravel (up to ½ inch insize), some claySANDY LEAN CLAY - very stiff, moist, light olive toyellowish olive brown, fine sand, some silt
More clay, trace gravel (up to ½ inch in size)Some calcium carbonate nodules
CLAYEY SAND - medium dense, moist to wet, light olive toolive yellow, fine to medium-grained, some coarse, some claynodules
SAM
PLE
LOC
.
Sta 475+12, Lt 10 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
Fugro / CME 75DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSDrilling mud bailed on 5/10/2011. Ground-water level measured at 29 feet belowthe ground surface on 5/11/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
199 feet
G-114
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: LHPrepared/Date: YN 8/29/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.14aMTA Westside Subway Extension
Los Angeles, California
Wils
hire
/ L
a B
rea
Stat
ion
ELEV
ATI
ON
(ft)
155
150
145
140
135
130
125
120
-
23.6
-
24.4
22.2
30.6
18.7
-
19.3
11.6
17.4
-
20.3
57
70
81
17
5
CH
CL
CH
SM
SP
SP-SM
SM
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
34
35
28
60
90
87
-
99
-
98
-
91
-
-
-
107
-
-
-
25
29
21
49
57
68
62
Becomes yellowish brown to olive brown, more silt and clay,fine-grained, trace gravel (up to 1/4 inch in size)
SANDY FAT CLAY - very stiff, moist, olive, fine to mediumsand, trace gravel (up to 1 inch in size)
Gravel (up to ¼ inch in size)
Layers of Silty Clay, very stiff, moist, greenish yellowishgray, some fine sand
SAN PEDRO FORMATION [Qsp]SANDY LEAN CLAY - very stiff, moist, greenish-gray, finesand
More silt
FAT CLAY with SAND - very stiff, moist, greenish-gray, finesand, some medium
SILTY SAND - dense, wet, greenish-gray, fine tomedium-grained
POORLY GRADED SAND - very dense, wet, greenish-gray,fine to medium-grained
Trace coarse sand
POORLY GRADED SAND with SILT - very dense, wet,greenish-gray, fine to medium-grained, some coarse
Becomes fine-grained, more silt
Becomes fine to coarse-grained, trace gravel ( up to ¼ inchin size)
SILTY SAND - very dense, wet, greenish gray, fine-grained,some medium to coarse
SAM
PLE
LOC
.
Sta 475+12, Lt 10 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
Fugro / CME 75DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSDrilling mud bailed on 5/10/2011. Ground-water level measured at 29 feet belowthe ground surface on 5/11/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
199 feet
G-114(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
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STR
ATA
MA
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RA
DU
AL.
Field Tech: LHPrepared/Date: YN 8/29/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.14bMTA Westside Subway Extension
Los Angeles, California
Wils
hire
/ L
a B
rea
Stat
ion
ELEV
ATI
ON
(ft)
115
110
105
100
95
90
85
80
14.2
23.7
-
49.3
30.0
35.6
35.3
40.4
38.5
51.5
31.1
36.5
13
98
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
63
50/1"
54
60
38
63
104
-
-
-
89
-
86
-
81
-
89
-
58
63
44
51
40
38
Becomes dense, trace gravel (up to 3/4 inch in size)
Becomes very dense, more fine sand
FERNANDO FORMATION [Tf]CLAYEY SILTSTONE - hard, moist, dark olive brown toolive gray, some fine sand, weakly cemented(Sample not recovered)
Becomes wet, trace fine sand, no cementation
Weakly to moderately cemented, alternating thin layers ofgrayish sand interbedded
Becomes olive brown to olive gray, no cementation to weaklycemented
Becomes very stiff, weakly cemented
SILTSTONE - hard, moist, olive brown to olive gray, weaklycemented
Becomes dry to moist, pale olive, moderately to stronglycemented
CLAYEY SILTSTONE - hard, moist, olive green, nocementation to weakly cemented, trace fine sand
SAM
PLE
LOC
.
Sta 475+12, Lt 10 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
Fugro / CME 75DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSDrilling mud bailed on 5/10/2011. Ground-water level measured at 29 feet belowthe ground surface on 5/11/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
199 feet
G-114(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
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AR
Y M
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JUN
E201
1.G
LBG
:\PR
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RIE
S\49
53\2
010\
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61_M
ETR
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IDE_
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\6.2
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ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
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ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
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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
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ATE
.SU
BSU
RFA
CE
CO
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ITIO
NS
AT
OTH
ER L
OC
ATI
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S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: LHPrepared/Date: YN 8/29/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.14cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
75
70
65
60
55
50
45
40
END OF BORING AT 120 FEET
NOTES:
Hand augered upper 6½ feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith quick set cement.
"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 readingsSA
MPL
E LO
C.
Sta 475+12, Lt 10 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
Fugro / CME 75DRILLING METHODRotary WashDATES DRILLED5/9/2011 - 5/11/2011GROUND-WATER READINGSDrilling mud bailed on 5/10/2011. Ground-water level measured at 29 feet belowthe ground surface on 5/11/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
199 feet
G-114(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
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T LO
G\N
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EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
125
130
135
140
145
150
155
160
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: LHPrepared/Date: YN 8/29/2011Checked/Date: HP/PE 9/19/2011
Project No.: 4953-10-1561 Figure: A-2.14dMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
195
190
185
180
175
170
165
160
21.4
25.1
26.9
32.9
20.6
35.6
46
CL
SM
ML
CL
CL
CL-ML
3.2
1.5
1.2
0.0
0.0
0.0
Push
25
21
101
-
96
-
105
-
18
24
11
10-inch thick Asphalt Concrete over 10-inch thick PortlandCement ConcreteFILL [Af]SANDY LEAN CLAY - moist, dark gray, fine to mediumsand, some coarse, some fine to coarse gravel (up to 1½ inchesin size)
Becomes light brownish yellow to white, trace calciumcarbonate nodules
LAKEWOOD FORMATION [Qlw]SILTY SAND - very loose, moist, olive yellow, fine tocoarse-grained, trace gravel (up to 1/2 inch in size)
Layers of Poorly Graded Sand with Silt, yellowish brown
SANDY SILT - very stiff, wet, olive green, fine sand, somemedium, some clay, some mica
Becomes wet
SAN PEDRO FORMATION [Qsp]SANDY LEAN CLAY - very stiff, moist, light olive green, finesand, iron oxide stains, some calcium carbonate nodules
More calcium carbonate nodules
LEAN CLAY with SAND - stiff, moist, light grayish green,fine sand, some calcium carbonate nodules, trace iron oxidestains
SILTY CLAY - stiff, wet, light greenish gray, more calciumcarbonate nodules
SAM
PLE
LOC
.
Sta 487+00, Lt 15 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 DRILLED6/23/2011 and 6/24/2011GROUND-WATER READINGSDrilling mud bailed on 6/23/2011. Ground-water level measured at 16 feet belowthe ground surface on 6/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
197 feet
G-116
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
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G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: LHPrepared/Date: JF 6/28/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.15aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
155
150
145
140
135
130
125
120
27.1
22.9
19.3
19.1
25.8
21.0
18.7
17.7
40
33
60
29
9
13
GC
SC
ML
SM
SP-SM
SM
SP-SM
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
13
14
32
23
100
-
112
-
101
-
107
-
29
12
49
55
CLAYEY GRAVEL with SAND - medium dense, moist,bluish green, coarse-grained, some fine and medium, finegravel (up to 1/2 inch in size)
CLAYEY SAND with GRAVEL - medium dense, moist, lightgrayish green, fine to coarse-grained, some coarse, fine gravel(up to 1 inch in size)
SANDY SILT - stiff, very moist, light greenish gray, fine sand,trace medium
SILTY SAND - medium dense, wet, light grayish green,fine-grained, trace medium, trace shell fragments
POORLY GRADED SAND with SILT - dense, wet, lightgreenish gray, fine-grained, some medium, occasional coarse
SILTY SAND - dense, wet, light greenish gray, fine tomedium-grained, trace coarse
POORLY GRADED SAND with SILT - medium dense, wet,dark olive gray, fine to coarse-grained
Becomes very dense, trace gravel (up to 1/2 inch in size)
SAM
PLE
LOC
.
Sta 487+00, Lt 15 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 DRILLED6/23/2011 and 6/24/2011GROUND-WATER READINGSDrilling mud bailed on 6/23/2011. Ground-water level measured at 16 feet belowthe ground surface on 6/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
197 feet
G-116(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: LHPrepared/Date: JF 6/28/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.15bMTA Westside Subway Extension
Los Angeles, California
Tun
nel
ELEV
ATI
ON
(ft)
115
110
105
100
95
90
85
80
34.5
16.7
-
2.3
11.3
53.4
9
1
90
GP
0.0
0.0
0.0
0.0
0.0
0.0
35
12
29
91
-
-
-
107
-
50/5"
57
52
Becomes olive gray to gray, fine-grained,occasional medium, some coarse
More coarse sand
Fine to coarse sand, some shell fragments
POORLY GRADED GRAVEL with SAND - very dense, wet,gray, fine rounded to subrounded gravel (up to 1/2 inch insize), some shell fragments, fine to coarse sand
(Sample not recovered)
Gravel (up to 1 inch in size)
FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, dark olive to grayish green, somefine sand, occasional medium, some mica, some clay
END OF BORING AT 106½ FEET
NOTES:
Hand augered upper 9½ feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.
"N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches
*Number of blows required to drive the Crandall Sampler12 inches using a 380 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
SAM
PLE
LOC
.
Sta 487+00, Lt 15 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 DRILLED6/23/2011 and 6/24/2011GROUND-WATER READINGSDrilling mud bailed on 6/23/2011. Ground-water level measured at 16 feet belowthe ground surface on 6/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
197 feet
G-116(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: LHPrepared/Date: JF 6/28/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561 Figure: A-2.15cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
190
185
180
175
170
165
160
24.3
26.2
24.4
25.5
-
21.3
10.2
13.6
13
59
ML
CL
CL
SM
ML
SM
ML
168
Push
11
27
54
98
-
100
-
-
-
117
-
23
16
63
42
6 inches thick Asphalt Concrete over 12 inches thick PortlandCement Concrete, No Base CourseFILL [Af] - SILT - soft, moist, light brown to tanQUATERNARY OLDER ALLUVIUM [Qalo]SANDY LEAN CLAY - moist, light brown to tan
SAN PEDRO FORMATION [Qsp]LEAN CLAY - very soft, moist, greenish gray, trace sand,trace calcium carbonate nodules
Becomes very stiff, with sand
SILTY SAND - medium dense, moist, greenish gray, fine tomedium-grained, with thin layer of Sandy Silt
SILT with SAND - very stiff, moist, greenish gray, fine sand,with calcium carbonate nodules, some clay
(Sample not recovered)
TAR IMPACTED SOILSSILTY SAND - very dense, moist, dark grayish black, fine tomedium-grained, strong sulfuric odor, moderately infused tar(8%)
Thin layer of Sandy Silt, dense, black
SANDY SILT - hard, moist, dark gray to black, moderatelyinfused tar (14%)
SAM
PLE
LOC
.
Sta 502+15, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/22/2011 - 3/24/2011GROUND-WATER READINGSGround-water level measured at 38 feet on 3/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
195 feet
G-118
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
20/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 5/19/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.16aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
150
145
140
135
130
125
120
14.7
18.2
8.3
7.4
7.0
-
4.1
6.6
8.2
2.9
-
8.4
10.2
18.5
61
27
7
13
28
SM
SP-SM
SM
284
198
386
360
190
27
26
25
24
29
47
35
101
-
115
-
109
-
119
-
101
-
-
-
100
-
44
87/11"
80
51
83/11"
50
51
Becomes very stiff
Becomes dark grayish black, fine sand, trace gravel
Becomes black
SILTY SAND - very dense, dark gray to black, fine tomedium-grained, trace gravel (up to 3/8 inch in size), saturatedwith tar
POORLY GRADED SAND with SILT - medium dense, moist,black, moderately infused tar (14%)
Becomes very dense
Becomes medium dense
Becomes very dense, saturated with tarSILTY SAND - very dense, wet, black, saturated with tar(17%)
(Sample not recovered)Becomes gravelly
Becomes dense, dark grayish black, fine-grained, tracegravel (up to 3/8 inch in size), saturated with tar (17%)
Becomes medium dense, fine gravel
FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, dark brown, with sand, slightlyinfused tar
SAM
PLE
LOC
.
Sta 502+15, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/22/2011 - 3/24/2011GROUND-WATER READINGSGround-water level measured at 38 feet on 3/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
195 feet
G-118(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
20/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 5/19/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.16bMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
110
105
100
95
90
85
80
21.7
20.8
28.0
21.8
18.6
24.5
25.9
26.0
23.3
186
182
108
99
14
106
55
22
20
21
29
85
-
75
-
92
-
86
-
-
54
40
52
58
Becomes dark grayish black, moderately infused tar
Slightly infused tar
Becomes stiff, moderately infused tar
Becomes hard, slightly infused tar
Becomes stiff
Becomes hard
Becomes stiff
END OF BORING AT 105½ FEET
NOTES:
Hand augered upper 10 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 Sampler12 inches using a 380 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
SAM
PLE
LOC
.
Sta 502+15, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/22/2011 - 3/24/2011GROUND-WATER READINGSGround-water level measured at 38 feet on 3/24/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
195 feet
G-118(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
20/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 5/19/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561 Figure: A-2.16cMTA Westside Subway Extension
Los Angeles, California
Tun
nel
ELEV
ATI
ON
(ft)
190
185
180
175
170
165
160
155
27.2
26.1
16.5
14.4
3.1
12.2
39.5
6
17
CL-ML
CL
SP-SM
ML
SM
28
46
19
20
235
100
76
13
12
57
17
88
-
104
-
119
-
74
10
41
66
8-inch thick Asphalt Concrete over 6-inch thick PortlandCement Concrete and 1-inch thick Base CourseQUATERNARY OLDER ALLUVIUM [Qalo]SILTY CLAY - moist, dark brown, trace fine sand
SAN PEDRO FORMATION [Qsp]LEAN CLAY - stiff, moist, light brown and light gray, somefine sand
Trace cemented silt pods
Layers of greenish gray, more sand
TAR IMPACTED SOILSPOORLY GRADED SAND with SILT - dense, moist, black,fine to medium-grained, some coarse, moderately infused tar,layers of Silty Sand
Saturated with tar
Trace gravel (up to 1/2 inch in size), moderately infusedtar (14%)
SILT - hard, moist, greenish gray, slightly infused tar
Becomes brownish gray
SILTY SAND - very dense, moist, black, fine tomedium-grained, saturated with tar (17%)
Becomes medium dense, greenish gray, moderately tarinfused (9%)
SAM
PLE
LOC
.
Sta 505+90, Lt 15 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 DRILLED4/4/2011 and 4/5/2011GROUND-WATER READINGSDrilling mud could not be bailed below 22 feet due to presence of heavy tar.Ground-water level not measured.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
192 feet
G-119
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
20/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/15/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.17aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
150
145
140
135
130
125
120
115
11.3
2.7
6.6
3.0
7.4
6.5
21.4
25.6
12
8
72
SP-SM
SP-SM
235
422
430
156
311
269
312
466
47
63
70
38
-
111
-
105
-
90
-
84
28
52
50
42
Becomes brownish gray
POORLY GRADED SAND with SILT - medium dense, moist,black, fine to medium-grained, saturated with tar
Becomes dense, decomposed organic fragments
Trace gravel (up to ½ inch in size)
Becomes very dense, fine-grained, trace medium to coarse,occasional gravel (up to 3/8 inch in size), saturated withtar (17%)
POORLY GRADED SAND with SILT and GRAVEL - dense,moist, black, fine-grained, some medium to coarse, fine tocoarse gravel (up to 1 inch in size), moderately infused tar(15%)
Becomes very dense
FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, brownish dark gray, slightlyinfused tar
Becomes moderately infused tar, fine sand,trace medium
SAM
PLE
LOC
.
Sta 505+90, Lt 15 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 DRILLED4/4/2011 and 4/5/2011GROUND-WATER READINGSDrilling mud could not be bailed below 22 feet due to presence of heavy tar.Ground-water level not measured.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
192 feet
G-119(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
20/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/15/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.17bMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
110
105
100
95
90
85
80
75
21.0
18.8
23.4
21.1
21.5
18.0
78
68
457
437
311
985
312
1243
50
49
55
-
85
-
87
-
89
52
35
36
Becomes brownish gray
Saturated with tar (18%)
Fine sand, some medium
Alternating with Sandy Siltstone, fine to medium sandEND OF BORING AT 106 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 Sampler12 inches using a 300 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
SAM
PLE
LOC
.
Sta 505+90, Lt 15 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 DRILLED4/4/2011 and 4/5/2011GROUND-WATER READINGSDrilling mud could not be bailed below 22 feet due to presence of heavy tar.Ground-water level not measured.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
192 feet
G-119(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
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ESIG
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.2 A
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IELD
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ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
100-
119)
.GPJ
10/
20/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
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N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
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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
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BET
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TRA
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RE
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. TR
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ATA
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E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/15/2011Checked/Date: LT/PE 9/23/2011
Project No.: 4953-10-1561 Figure: A-2.17cMTA Westside Subway Extension
Los Angeles, California
Tun
nel
ELEV
ATI
ON
(ft)
175
170
165
160
155
150
145
140
24.5
29.0
18.0
13.6
29.3
12.1
6.9
3
59
7
CL
GP
SP-SM
GM
ML
SP-SM
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Push
18
7
10
90
-
77
-
84
-
101
23
24
33
4-inch thick Asphalt Concrete over 7-inch Portland CementConcreteFILL [Af]SANDY LEAN CLAY - moist, brown, fine to medium sand,occasional fine gravel
More gravel
LAKEWOOD FORMATION [Qlw]POORLY GRADED GRAVEL with SAND - medium dense,wet, olive brown to bluish gray with light brown mottled, fine,fine to coarse sand, gravel (up to 3/4 inch in size)
SAN PEDRO FORMATION [Qsp]POORLY GRADED SAND with SILT - medium dense, moist,black to dark brown, fine-grained
SILTY GRAVEL with SAND - wet, dark reddish brown, fineto coarse sandTAR IMPACTED SOILSSANDY SILT - very stiff, moist, black, fine sand, somemedium to coarse, occasional gravel (up to 3/8 inch in size),slightly infused tar
Becomes medium stiff, wet, dark brown
POORLY GRADED SAND with SILT - dense, moist, black,fine to medium-grained, moderately infused tar
Becomes loose, fine-grained, trace medium
SAM
PLE
LOC
.
Sta 516+36, Rt 14 feetHOLE DIAMETER4-7/8 inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/16/2011 - 5/18/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 14 feet below the groundsurface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
177 feet
G-121
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
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L D
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.2 A
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IELD
NO
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EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
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IMES
MA
Y D
IFFE
R.
INTE
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BET
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TRA
TA A
RE
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RO
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ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 6/20/2011Checked/Date: LT/RM 9/21/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.18aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
135
130
125
120
115
110
105
100
8.0
10.2
-
-
3.4
6.8
25.5
2
8
GW
SP
GW
SP
GP
SW-SM
ML
0.0
0.0
0.0
0.0
0.0
13
15
-
-
-
-
-
-
-
56
41
16
23
53
CLAYEY GRAVEL with SAND - very dense, moist, black,fine to coarse gravel, moderately infused tar
POORLY GRADED SAND - dense, moist, dark brown, fine tomedium-grained, saturated with tar
WELL GRADED GRAVEL with SAND - wet, black, fine tocoarse gravel, saturated with tarPOORLY GRADED SAND - medium dense, moist, black, fineto medium-grained, trace gravel, saturated with tar
POORLY GRADED GRAVEL with SAND - medium dense,wet, black, fine to coarse, fine sand
Becomes fine (up to 3/4 inch in size), coarse sand, some fineto coarse sand
WELL GRADED SAND with SILT and GRAVEL - mediumdense, moist, fine to coarse-grained, fine gravel (up to 1/2 inchin size)
SILT with SAND - hard, moist, dark brown, fine sand,moderately infused tar
SAM
PLE
LOC
.
Sta 516+36, Rt 14 feetHOLE DIAMETER4-7/8 inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/16/2011 - 5/18/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 14 feet below the groundsurface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
177 feet
G-121(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 6/20/2011Checked/Date: LT/RM 9/21/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.18bMTA Westside Subway Extension
Los Angeles, California
PMT
Tun
nel
ELEV
ATI
ON
(ft)
95
90
85
80
75
70
65
60
21.5
22.2
21.4
23.5
14.0
24.8
22.3
77
33
GM
ML
0.0
0.0
0.0
0.0
0.0
0.0
0.0
18
21
17
21
91
-
-
-
-
-
88
45
54
62
Becomes very stiff, fine grained, some medium
Becomes hard
Trace gravel
SILTY GRAVEL with SAND - medium dense, wet, darkbrown, fine gravel (up to 3/4 inch in size), fine to coarse sand,moderately infused tar, (sample disturbed)
GRAVELLY SILT with SAND - hard, wet, dark brown, fineto coarse sand, fine gravel (up to 3/4 inch in size), slightlyinfused tar
FERNANDO FORMATION [Tf]SILTSTONE - very stiff to hard(Sample disturbed)
More sand
Less sandEND OF BORING AT 111 FEETNOTES:Hand augered upper 5 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete."N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches
*Number of blows required to drive the Crandall Sampler12 inches using a 380 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readingsDownhole Test: PMT = Pressuremeter
SAM
PLE
LOC
.
Sta 516+36, Rt 14 feetHOLE DIAMETER4-7/8 inches
GROUND EL.
MO
ISTU
RE
CO
NTE
NT
(% o
f dry
wt.)
PER
CEN
T PA
SSIN
GN
o. 2
00 S
IEV
E
DO
WN
HO
LE T
ESTS
OV
A (p
pm)*
*
BLO
W C
OU
NT*
(blo
ws/
ft)
DR
Y D
ENSI
TY(p
cf)
"N"
VA
LUE
STD
.PEN
.TES
T
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED5/16/2011 - 5/18/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 14 feet below the groundsurface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
177 feet
G-121(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: HTYPrepared/Date: YN 6/20/2011Checked/Date: LT/RM 9/21/2011
Project No.: 4953-10-1561 Figure: A-2.18cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
165
160
155
150
145
140
135
130
15.9
19.4
16.5
19.5
-
30.7
17.2
17
67
ML
SM
ML
SM
SC
ML
CL
ML
SM
4.8
6.3
4.7
16.7
4.5
7.0
10
15
34
38
111
-
109
-
-
-
105
16
19
16
11-inch thick Asphalt Concrete over 9-inch thick SlurryBackfill and 5-inch thick Base CourseFILL [Af]SANDY SILT - moist, brown, fine to medium sand
SILTY SAND with GRAVEL - moist, light brown, fine tocoarse-grainedQUATERNARY YOUNGER ALLUVIUM [Qal] SILT - moist, light brown, some fine sand, some clay
SILTY SAND - loose, light brown, fine to medium-grained
Some gravel
QUATERNARY OLDER ALUVIUM [Qalo]TAR IMPACTED SOILSCLAYEY SAND - medium dense, moist, brown to grayishbrown, fine to medium-grained, trace coarse, slightly infusedtar (5%)Becomes greenish gray
Less clay
Becomes greenish gray, some coarse, occasional gravel,some small tar pods
SILT - moist, light brown, some clay, slight hydrogen sulfideodor
Becomes greenish gray, 4-inch cobblesSANDY LEAN CLAY - very stiff, dark gray to black, fine tomedium sand, layers of coarse sand, very light hydrogensulfide odor, some gravel
(Sample not recovered)Trace gravel (up to 1/4 inch in size)
SAN PEDRO FORMATION [Qsp]SANDY SILT - very stiff, moist, greenish gray, fine to mediumsand, slightly infused tar (4%), trace clay
SILTY SAND - dense, moist, dark brown to grayish black,fine-grained, moderately to saturated with tar, heavy hydrogensulfide odor,
SAM
PLE
LOC
.
Sta 528+40, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/16/2011 - 3/18/2011GROUND-WATER READINGSDrilling mud bailed on 3/18/2011. Ground-water level measured at 32 feet belowthe ground surface 15 minutes after drilling.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
168 feet
G-123
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: LH 6/22/2011Checked/Date: LT/RM 10/1/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.19aMTA Westside Subway Extension
Los Angeles, California
PMT
PMT
Wils
hire
/ Fa
irfa
x St
atio
n
ELEV
ATI
ON
(ft)
125
120
115
110
105
100
95
90
10.0
6.4
8.5
5.8
9.4
7.9
5.5
5.1
2.0
5.3
3.1
1.8
8
15
6
SW-SM
SM
SP-SM
SM
46.7
76.8
135
62.4
145
201
147
228
93
475
214
153
96/9"
98/11"
86/9"
75/5"
75/9"
75/5"
-
114
-
109
-
105
-
120
-
107
-
113
67
56
42
71
50/5"
50/4"
Becomes very dense, black
WELL GRADED SAND with SILT - very dense, moist,black, fine to coarse-grained, trace gravel (up to 3/4 inch insize), moderately infused tar (10%)
Less gravel
SILTY SAND - dense, moist, black, fine-grained, tracemedium to coarse, trace fine gravel (up to 3/8 inch in size),moderately infused tar (11%)
Becomes very dense
6-inch layer of gravel
Becomes greenish gray, trace gravel (up to 1 inch in size)
Becomes black, some gravel, saturated with tar
POORLY GRADED SAND with SILT - very dense, dry tomoist, fine to medium-grained, occasional coarse, saturatedwith tar (16%)
SILTY SAND - very dense, dry to moist, black, fine gravel
SAM
PLE
LOC
.
Sta 528+40, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/16/2011 - 3/18/2011GROUND-WATER READINGSDrilling mud bailed on 3/18/2011. Ground-water level measured at 32 feet belowthe ground surface 15 minutes after drilling.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
168 feet
G-123(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: LH 6/22/2011Checked/Date: LT/RM 10/1/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.19bMTA Westside Subway Extension
Los Angeles, California
Wils
hire
/ Fa
irfa
x St
atio
n
ELEV
ATI
ON
(ft)
85
80
75
70
65
60
55
50
5.9
4.7
6.3
20.1
14.2
21.2
16.5
558
117
95.4
>3000
2692
1132
2934
99/8"
45
48
-
109
-
97
-
-
97
89
74
53
46
Becomes moist
FERNANDO FORMATION [Tf]SILTSTONE - hard, moist, dark gray, fine sand, trace finegravel, moderately infused tar to saturated with tar
No gravel
END OF BORING AT 110 FEETNOTES:Hand augered upper 7 feet to avoid damage to utilites.Borehole grouted with cement-bentonite slurry and patchedwith asphalt concrete.
"N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches
*Number of blows required to drive the Crandall Sampler12 inches using a 300 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
Downhole Test: PMT = Pressuremeter
SAM
PLE
LOC
.
Sta 528+40, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED3/16/2011 - 3/18/2011GROUND-WATER READINGSDrilling mud bailed on 3/18/2011. Ground-water level measured at 32 feet belowthe ground surface 15 minutes after drilling.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
168 feet
G-123(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
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GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: LH 6/22/2011Checked/Date: LT/RM 10/1/2011
Project No.: 4953-10-1561 Figure: A-2.19cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
160
155
150
145
140
135
130
125
17.1
19.7
23.1
19.9
23.0
13.6
35
32
SM
SM
SC
SC
CH
SC
0.0
0.1
0.5
0.6
78
76
Push
11
21
108
-
99
-
95
-
16
34
42
6-inch thick Asphalt Concrete over 12-inch thick PortlandCement ConcreteFILL [Af]SILTY SAND with CLAY - moist, brown
LAKEWOOD FORMATION [Qlw]SILTY SAND - moist, orangish brown, fine tomedium-grained, trace fine gravel, layers of Clayey Sand
Becomes yellowish brown, fine-grained, trace medium tocoarse, trace gravel
CLAYEY SAND - very loose, moist, yellowish brown,fine-grained, trace medium to coarse gravel, micaceous
SAN PEDRO FORMATION [Qsp]TAR IMPACTED SOILSCLAYEY SAND - medium dense, moist, olive brown tograyish-brown, fine to medium-grained, some coarse-grained,trace iron oxide stains, slightly infused tar (4%)
FAT CLAY - stiff, moist, gray, trace fine sand
Becomes hard, gray to very dark brown, some iron oxide,some calcium carbonate nodules, heavy organic odor
CLAYEY SAND - medium dense to dense, wet, gray to verydark brown, fine to medium-grained, occasional coarse,moderately infused tar (10%)
Strong organinc odor
SAM
PLE
LOC
.
Sta 533+75, 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 DRILLED3/17/2011 - 3/21/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 34 feet below the groundsurface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
162 feet
G-124
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 3/29/2011Checked/Date: RH/LT 10/1/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.20aMTA Westside Subway Extension
Los Angeles, California
NV
Wils
hire
/ Fa
irfa
x St
atio
n
ELEV
ATI
ON
(ft)
120
115
110
105
100
95
90
85
-
11.7
-
5.1
6.1
8.2
5.6
14
9
SM
SP-SM
60
262
402
366
489
382
467
15
40
33
28
40
-
-
-
-
113
106
114
52
97
Becomes dark brown, some tar, (sample not recovered)
SILTY SAND - very dense, moist, dark brown, fine-grained,some medium, occasional coarse, moderately infused tar (7%)
Becomes dense
POORLY GRADED SAND with SILT - dense to very dense,moist, black to dark brown, fine-grained, some gravel
Becomes very dark brown, fine to medium-grained, tracecoarse, some gravel (up to 3/4 inch in size), moderatly infusedtar (13%)
Becomes medium dense, black, fine-grained
Becomes dense
SAM
PLE
LOC
.
Sta 533+75, 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 DRILLED3/17/2011 - 3/21/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 34 feet below the groundsurface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
162 feet
G-124(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
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IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 3/29/2011Checked/Date: RH/LT 10/1/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.20bMTA Westside Subway Extension
Los Angeles, California
NV
NV
Wils
hire
/ Fa
irfa
x St
atio
n
ELEV
ATI
ON
(ft)
80
75
70
65
60
55
50
45
5.2
3.4
5.1
8.2
25.4
-
10SW-SM
SM
ML
482
565 70
48
85
-
121
-
106
-
-
97/9"
88
51
WELL GRADED SAND with SILT - very dense, moist, fine tocoarse-grained, fine gravel (up to 1 inch in size), moderatelyinfused tar (12%)
SILTY SAND - very dense, moist, very dark brown to black,fine grained, moderately infused tar
Becomes black to dark brown
SANDY SILT - hard, moist, olive gray, fine sand, slightlyinfused tar (<5%)
(Sample not recovered)END OF BORING AT 106 FEET
NOTES:
Hand augered upper 10 feet to avoid damage to utilities.Borehole grouted with cement-bentonite slurry and patchedwith quick set cement.
"N" Value Standard Penetration Test: Number of blowsrequired to drive the SPT sampler 18 inches using a140 pound automatic hammer falling 30 inches
*Number of blows required to drive the Crandall Sampler12 inches using a 380 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
Downhole Test: NV = Noise/Vibration
SAM
PLE
LOC
.
Sta 533+75, 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 DRILLED3/17/2011 - 3/21/2011GROUND-WATER READINGSDrilling mud bailed. Ground-water level measured at 34 feet below the groundsurface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
162 feet
G-124(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 3/29/2011Checked/Date: RH/LT 10/1/2011
Project No.: 4953-10-1561 Figure: A-2.20cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
145
140
135
130
125
120
115
110
14.5
19.0
18.4
20.1
15.4
36.6
27.3
22.8
19
ML
ML
ML
SM
ML
SM
SP
ML
0.0
0.1
0.3
0.0
0.5
3.4
0.7
2.9
12
12
33
37
112
-
104
-
107
-
94
-
22
24
18
24
8-inch thick Asphalt Concrete over 5-inch thick PortlandCement Concrete and 12-inch thick Base CourseQUATERNARY YOUNGER ALLUVIUM [Qal]SILT - moist, trace fine sand, some clay
SANDY SILT - stiff, moist, brown, fine to medium sand
SILT - very stiff, moist, light brown, some fine sand, some clay
LAKEWOOD FORMATION [Qlw]SILTY SAND - loose, moist, light brown, fine tomedium-grained
Becomes olive brown, fine-grained, trace iron oxide stains
Becomes medium dense, brown to olive brown
Occasional medium sand
SAN PEDRO FORMATION [Qsp]SANDY SILT - very stiff, moist, olive brown
SILTY SAND - moist, bluish gray, fine to medium-grained
POORLY GRADED SAND - dense, moist, bluish gray, fine tomedium-grained
SILT - very stiff, moist, bluish gray, fine to medium sand,some clay
SAM
PLE
LOC
.
Sta 550+50, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/6/2011 - 4/8/2011GROUND-WATER READINGSDrilling mud bailed on 4/7/2011. Ground-water level measured at 49 feet belowthe ground surface on 4/8/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
146 feet
G-125
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/10/2011Checked/Date: LT 9/22/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.21aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
105
100
95
90
85
80
75
70
14.1
19.1
19.5
18.6
22.6
24.1
16.2
23.3
28.4
19.6
24.7
15.6
27.8
61
15
90
14
SM
ML
SM
MH
SP
SM
3.8
4.9
5.9
8.3
8.1
8.3
8.6
8.4
8.4
8.3
8.2
8.1
8.3
21
23
34
62
37
53
95
115
-
107
-
99
-
112
-
96
-
103
-
96
36
40
32
42
66
83
Becomes greenish gray, trace gravel (up to 1/8 inch in size)
SILTY SAND - dense, moist, bluish gray, fine tocoarse-grained, layers of Silt
SANDY SILT - very stiff to hard, moist, greenish gray, fine tomedium sand, trace coarse sand, occasional gravel (up to 3/8inch in size), layers of Sandy Lean Clay
SILTY SAND - very dense, greenish gray, fine tomedium-grained, occasional coarse, some fine gravel (up to3/4 inch in size), trace hydrogen sulfide odor
ELASTIC SILT - hard, wet, greenish gray, some fine sand,trace medium to coarse sand, some clay, trace hydrogensulfide odor
POORLY GRADED SAND - dense to very dense, moist,bluish gray, fine to medium-grained
Becomes greenish gray
SILTY SAND with GRAVEL - very dense, moist, gray,fine-grained, some medium to coarse, fine gravel (up to 3/4inch in size)
SAM
PLE
LOC
.
Sta 550+50, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/6/2011 - 4/8/2011GROUND-WATER READINGSDrilling mud bailed on 4/7/2011. Ground-water level measured at 49 feet belowthe ground surface on 4/8/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
146 feet
G-125(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
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.2 A
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IELD
NO
TES\
GIN
T LO
G\N
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EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/10/2011Checked/Date: LT 9/22/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.21bMTA Westside Subway Extension
Los Angeles, California
Tun
nel
ELEV
ATI
ON
(ft)
65
60
55
50
45
40
35
30
15.7
18.3
16.0
25.5
25.8
23.0
27.1
19.5
16.0
19.0
22.3
15
SP
SM
ML
SP-SM
ML
SM
SP
SP
7.6
10.5
13.0
10.1
9.2
8.7
7.9
8.9
7.8
9.3
9.4
75/6"
80/11"
66
50
75/5"
-
99
-
93
-
94
-
107
-
103
-
50/4"
74
62
34
52/6"
50/5"
POORLY GRADED SAND - very dense, moist, bluish gray
Trace gravel (up to ½ inch in size), trace hydrogen sulfideodor
SILTY SAND - very dense, wet, dark gray, fine-grained
SILT with SAND - moist, greenish gray
POORLY GRADED SAND with SILT - very dense, dark gray,fine-grained
SILT with SAND - hard, wet, greenish gray, some clay
SILTY SAND - dense, moist, greenish gray, fine tomedium-grained, trace gravel, trace cobble (up to 6 inches insize)Thin layer of Silt, some clay
POORLY GRADED SAND - very dense, moist, greenish gray,fine-grained, trace hydrogen sulfide odor
Becomes gray, fine to medium-grained
POORLY GRADED SAND with GRAVEL - very dense, wet,greenish gray, fine to medium-grained, trace hydrogen sulfideodor, gravel (up to 1/4 inch in size)
SAM
PLE
LOC
.
Sta 550+50, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/6/2011 - 4/8/2011GROUND-WATER READINGSDrilling mud bailed on 4/7/2011. Ground-water level measured at 49 feet belowthe ground surface on 4/8/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
146 feet
G-125(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
85
90
95
100
105
110
115
120
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/10/2011Checked/Date: LT 9/22/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.21cMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
25
20
15
10
5
0
-5
-10
END OF BORING AT 120 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 Sampler12 inches using a 300 pound hammer falling 18 inches
**Photo Ionization Detector used for OVA readings
SAM
PLE
LOC
.
Sta 550+50, Lt 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
C & L Drilling / Mayhew 1000DRILLING METHODRotary WashDATES DRILLED4/6/2011 - 4/8/2011GROUND-WATER READINGSDrilling mud bailed on 4/7/2011. Ground-water level measured at 49 feet belowthe ground surface on 4/8/2011.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
146 feet
G-125(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
125
130
135
140
145
150
155
160
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: ARPrepared/Date: JF 6/10/2011Checked/Date: LT 9/22/2011
Project No.: 4953-10-1561 Figure: A-2.21dMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
140
135
130
125
120
115
110
105
30.2
25.3
30.6
27.4
30.0
31.8
CL
CL
MH
Push
6
9
88
-
89
-
90
-
8
13
15
4-inch thick Asphalt Concrete over 12-inch thick PortlandCement Concrete, No Base CourseFILL [Af]CLAY and SAND - moist, dark brown to dark gray, withgravel(Sand - possible utility backfill)
QUATERNARY YOUNGER ALLUVIUM [Qal]LEAN CLAY - very soft, moist, light brown
Becomes medium stiff, brown, thinlayer of fine Silty Sand
Trace sand
Becomes stiff, thin layers of Sandy Lean Clay
SAN PEDRO FORMATION [Qsp]ELASTIC SILT - stiff, moist, greenish gray, trace fine sand
Becomes very stiff, wet, trace calcium carbonate nodules
SAM
PLE
LOC
.
Sta 556+85, Lt 10 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 DRILLED4/4/2011-4/7/2011GROUND-WATER READINGSGround-water level encountered at 31 feet below ground surface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
143 feet
G-126
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
5
10
15
20
25
30
35
40
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 5/18/2011Checked/Date: LT/PE 9/22/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.22aMTA Westside Subway Extension
Los Angeles, California
ELEV
ATI
ON
(ft)
100
95
90
85
80
75
70
65
23.6
20.5
21.0
29.1
34.9
29.2
25.9
28.3
42
55
45
SC
SM
ML
SP
SM
10
21
43
79
101
-
-
94
92
-
98
-
30
44
49
36
Alternating with layers of Poorly Graded Gravel
CLAYEY SAND - dense, wet, light gray to gray, fine-grained,trace gravel, calcium carbonate nodules
Cobbles (up to 3 inches in size)
SILTY SAND - dense, wet, gray, fine-grained
Becomes greenish gray
SANDY SILT - hard, wet, gray, fine sand
POORLY GRADED SAND - very dense, wet, gray,fine-grained, trace silt, micaceous
SILTY SAND - dense, wet, greenish gray, fine-grained, thinlayer of Lean Clay
SAM
PLE
LOC
.
Sta 556+85, Lt 10 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 DRILLED4/4/2011-4/7/2011GROUND-WATER READINGSGround-water level encountered at 31 feet below ground surface.
BOREHOLE LOCATION
DRILLING COMPANY/DRILLING EQUIPMENT
143 feet
G-126(Continued)
LOG OF BORING
BORING NO.LA
MET
RO
PB
-TU
NN
EL Z
ON
E S
:\701
31 G
EOTE
CH
\GIN
TW\L
IBR
AR
Y M
AC
TEC
JUN
E201
1.G
LBG
:\PR
OJE
CT_
DIR
ECTO
RIE
S\49
53\2
010\
1015
61_M
ETR
O_W
ESTS
IDE_
EXTE
NSI
ON
\6.2
.3.1
GEO
TEC
HN
ICA
L D
ESIG
N\3
.2 A
LL F
IELD
NO
TES\
GIN
T LO
G\N
EW T
EMPL
ATE
- M
AR
CH
14,
201
1\49
53-1
0-15
61_(
120-
139)
.GPJ
10/
18/1
1
DEP
TH (f
t)
45
50
55
60
65
70
75
80
THIS
REC
OR
D IS
AN
INTE
RPR
ETA
TIO
N O
F SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
THE
EXPL
OR
ATI
ON
LO
CA
TIO
N. L
ATI
TUD
E A
ND
LO
NG
ITU
DE
OF
BO
RIN
G L
OC
ATI
ON
SH
OW
N O
N L
OG
S A
RE
APP
RO
XIM
ATE
.SU
BSU
RFA
CE
CO
ND
ITIO
NS
AT
OTH
ER L
OC
ATI
ON
S A
ND
AT
OTH
ER T
IMES
MA
Y D
IFFE
R.
INTE
RFA
CES
BET
WEE
N S
TRA
TA A
RE
APP
RO
XIM
ATE
. TR
AN
SITI
ON
S B
ETW
EEN
STR
ATA
MA
Y B
E G
RA
DU
AL.
Field Tech: DWPrepared/Date: JF 5/18/2011Checked/Date: LT/PE 9/22/2011
Project No.: 4953-10-1561
(CONTINUED ON FOLLOWING FIGURE)
Figure: A-2.22bMTA Westside Subway Extension
Los Angeles, California
Tun
nel
top related