Sample IDSample Depth Chlo ro fo rm
5 ' 245 ' 20
10 ' 0 .34SG-TR-11
Sample IDSam ple Depth Chlo ro fo rm
5 ' 1210 ' 16
SG-TR-12
Sample IDSam ple Depth Chlo ro fo rm
5 ' 4 .55 ' 4 .3
10 ' 7 .9SG-0 28J-4
Sam ple IDSample Depth Chlo ro fo rm
5 ' 0 .235 ' < 0 .1 7
10 ' 0 .2 3SG-0 28 J-2
Sample IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0 81 0 ' < 0 .0 8
SG-0 28 J-1
Sample IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0 81 0 ' 0 .4 5
SG-TR-1 3
Sample IDSample Depth Chlo ro fo rm
5 ' 0 .3 61 0 ' 1 .8
SG-02 8 J-5
Sample IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0 81 0 ' 1 .2
SG-0 28 J-8
Sample IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0 81 0 ' < 0 .0 8
SG-0 2 8 J-1 0
Sam ple IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0 810 ' < 0 .08
SG-0 2 8J-1 1
Sam ple IDSample Depth Chlo ro fo rm
5 ' < 0 .0 81 0 ' 0 .1 6
SG-0 2 8 J-1 2
Sam ple IDSam ple Depth Chlo ro fo rm
5 ' 0 .1 610 ' 1 .1
SG-0 2 8J-1 3
Sam ple IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0 810 ' < 0 .08
SG-0 2 8J-1 4
Sam ple IDSam ple Depth Chlo ro fo rm
5 ' < 0 .0810 '
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' < 5 .0
10 ' < 4 .915 ' < 4 .920 ' < 4 .9
28J-1
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 5 .05 ' < 4 .8
10 ' < 4 .915 ' < 5 .020 ' 14
28J-3
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' 8 .5
11 ' 1416 ' 1720 ' 15
28J-4
Boring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' < 5 .0
10 ' < 5 .016 ' 5 .720 ' < 4 .9
2 8J-5
Boring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' < 5 .0
10 ' < 5 .015 ' < 5 .020 ' < 4 .9
2 8J-6
Boring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' < 4 .8
10 ' < 5 .015 ' 7 .220 ' 10
2 8J-7
Boring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' < 5 .0
10 ' < 4 .815 ' 8 .720 ' 10
2 8J-8
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 510 ' < 4 .815 ' 1320 ' 21
28 J-A
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 5 .810 ' 5 .315 ' 1820 ' 21
28 J-B
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 1810 ' < 5 .015 ' 1620 ' 22
2 8J-C
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 6 .71 0 ' < 4 .51 5 ' 212 0 ' 16
28 J-D
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 5 .31 0 ' 6 .11 5 ' 212 0 ' 31
2 8J-E
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 8 .51 0 ' < 8 .21 5 ' 162 0 ' 10
28 J-F
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 51 0 ' < 7 .81 5 ' 202 0 ' 27
28 J-G
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 4 .210 ' < 4 .815 ' 9 .220 ' 15
2 8J-H
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 3 .81 0 ' < 5 .91 5 ' < 4 .02 0 ' < 4 .3
28J-I
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 4 .010 ' < 4 .415 ' 7 .620 ' 9 .7
2 8J-J
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 4 .410 ' < 4 .915 ' 620 ' 7 .1
02 8J-K
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 5 .91 0 ' < 4 .21 5 ' 9 .32 0 ' 11
02 8J-L
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' 610 ' < 4 .415 ' 5 .920 ' 9 .1
02 8J-M
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 4 .41 0 ' < 4 .81 5 ' < 4 .02 0 ' < 4 .1
028 J-N
Boring Num ber
Sam ple Depth Chlo ro fo rm
5 ' < 4 .010 ' < 4 .215 ' < 4 .420 ' < 4 .1
02 8J-PBoring
Num berSam ple Depth Chlo ro fo rm
5 ' < 4 .710 ' < 4 .515 ' < 4 .120 ' < 4 .125 ' < 4 .3
02 8J-O
Bo ring Num ber
Sam ple Depth Chlo ro fo rm
0 ' < 4 .95 ' < 4 .8
10 ' < 4 .915 ' < 5 .020 ' < 4 .9
28J-2
Boring Num ber
Sample Depth Chlo ro fo rm
W V-0 3 -1 5 ' < 4 .8
Boring Num ber
Sample Depth Chlo ro fo rm
W V-0 3 -2 5 ' < 4 .9
Bo ring Number
Sample Depth Chlo ro fo rm
TR-9 ~4 .5 ' < 4 .9
Sample IDSam ple Depth Chlo ro fo rm
GW -028 J-X 24 ' 73
Sam ple IDSam ple Depth Chlo ro fo rm
GW -02 8 J-Z 24 ' 1 .8
Sam ple IDSam ple Depth Chlo ro fo rm
GW -28 J-O 27 ' 3 .5
Sam ple IDSam ple Depth Chlo ro fo rm
GW -02 8J-3 26 ' < 1
Sample IDSam ple Depth Chlo ro fo rm
GW -0 28J-2 2 6 ' < 4
Sample IDSam ple Depth Chlo ro fo rm
GW -0 28J-4 2 7 ' < 1
Sample IDSam ple Depth Chlo ro fo rm
GW -0 28 J-5 24 ' < 2
Sample IDSam ple Depth Chlo ro fo rm
GW -0 28 J-6 26 ' < 1
Sample IDSam ple Depth Chlo ro fo rm
GW -0 28J-7 2 5 ' 28
Sample IDSam ple Depth Chlo ro fo rm
GW -02 8J-1 2 26 ' 9 .2
Sample IDSam ple Depth Chlo ro fo rm
GW -02 8J-13 2 9 ' 120
Sample IDSam ple Depth Chlo ro fo rm
GW -02 8J-15 2 9 ' < 1
Sam ple IDSam ple Depth Chlo ro fo rm
GW -02 8J-16 30 ' < 4
Sample IDSam ple Depth Chlo ro fo rm
GW -2 8 J-Q 2 9 ' < 2
Sample IDSample Depth Chlo ro fo rm
GW -028 J-Y 2 6 ' < 1Sam ple ID
Sam ple Depth Chlo ro fo rm
GW -028J-1 27 ' < 4
Sample IDSample Depth Chlo ro fo rm
GW -028J-S 30 ' 8
Sam ple IDSam ple Depth Chlo ro fo rm
GW -28 J-R 2 9 ' < 2
Sample IDSam ple Depth Chlo ro fo rm
GW -02 8J-T 33 '
Sample ID Sample Date ChloroformMay-07 49Sep-07 15Nov-07 15Jan-08 19Feb-08 17Apr-08 17May-08 14Aug-08 9.1Oct-08 11
EW-1
Sample ID Sample Date ChloroformMay-07 95Sep-07 31Nov-07 28Jan-08 22Feb-08 19Apr-08 17May-08 21Aug-08 7.6Oct-08 8.9
EW-2
Sample ID Sample Date ChloroformMay-07 2.0Sep-07 2.2Nov-07
Sam ple IDSam ple Depth Chlo ro fo rm
CP T-1 44 -4 6 ' 3 .8
Sam ple IDSample Depth Chloro fo rm
CP T-2 4 4 -4 6 ' < 1 .0
Sam ple IDSample Depth Chlo ro fo rm
CP T-5 4 4-4 6 ' 34
Sam ple IDSam ple Depth Chlo ro fo rm
CP T-6 4 7 -4 9 ' < 1 .0CP T-6 -DUP 4 7 -4 9 ' < 1 .0
Sam ple IDSam ple Depth Chlo ro fo rm
CP T-8 4 7 -49 ' < 1 .0
FORMERBUILDING
028J
EW-1
EW-2
EW-3
EW-7
EW-6
EW-5
EW-4
EW-9
EW-10
EW-11
EW-12
EW-14
EW-13 EW-15
EW-8
20,00
0-gallo
n
Holdin
g Tan
k
17,000-gallonHolding Tank
20-FootGate
20-FootGate
2-PHASE Extraction Skidwith Heat Exchanger and two1,000-pound Carbon Vessels
TM
Standby CarbonVessels
Well Manifold
Diesel-PoweredGenerator withSecondaryContainment
EW-17
EW-16
EW-18
Remediation Area LayoutHitachi GSTSan Jose, California
10
EXPLANATION:
Groundwater Monitoring/ Extraction Well
Construction Fence
12-foot Security Fence
Aboveground ExtractionWell Piping
EW-12
Building 028J and all otherbackground structures shownhave been demolished.
AIR/WATERSEPARATOR
"C1" 1,000 LBVAPOR-PHASE CARBON VESSEL
"C2" 1,000 LBVAPOR-PHASE CARBON VESSEL
HOLDING TANK
TM2-PHASE Extraction Process Flow DiagramHitachi GSTSan Jose, California 11
Figure
Drafter: Date: Contract Number: Approved: Revised:EC 9/28/07 03-11903E
q:\D
RA
WIN
GS
\0311903E
\11903E
-SO
IL V
AP
OR
PF
D
PVC Well Casing
1" PVC Suction Pipe
Extraction Line
("STINGER")
Vacuum/VaporSampling Port
Water LevelMeasurement Port
TM
Revised:Approved:Contract Number:Date:Drafter:
Figure
Q:\D
RA
WIN
GS
\03
11
90
3E
\11
90
3E
-EX
-7-2
.dw
g -
Wed
, 2
5 J
un 2
00
8 -
10
:46
am
EC 9/28/07 03-11903E
Schematic of 2-Phase Extraction Well HeadHitachi GSTSan Jose, California 12
Groundwater Elevations in Monitoring Wells June 2007 – October 2008Hitachi GSTSan Jose, California
CJR 10/27/08 03-11903E
13
153
154
155
156
157
158
159
160
161
162
163
May 1, 2007June 6, 2007July 12, 2007August 17, 2007September 22, 2007
October 28, 2007December 3, 2007
January 8, 2008February 13, 2008
March 20, 2008April 25, 2008May 31, 2008July 6, 2008August 11, 2008September 16, 2008
October 22, 2008November 27, 2008
Date
Gro
undw
ater
Ele
vatio
n (fe
et, M
SL
Dat
um)
EW-1 EW-3 EW-7 EW-8 EW-12 EW-15
Chloroform Concentrations in Extracted Vapor and Cumulative Mass RemovalHitachi GSTSan Jose, California
CJR 11/6/08 03-11903E
14
0
2
4
6
8
10
12
14
16
July 25, 2007August 22, 2007September 19, 2007
October 17, 2007November 14, 2007
December 12, 2007
January 9, 2008February 6, 2008March 5, 2008April 2, 2008April 30, 2008May 28, 2008June 25, 2008July 23, 2008August 20, 2008
Date
Chl
orof
orm
Con
cent
ratio
n (u
g/L)
0
1
2
3
4
5
6
7
8
9
Chlo
rofo
rm R
emov
al (p
ound
s)
System Off11/3 to 12/4
Cumulative Chloroform Removed(bars represent estimation error)
Chloroform Concentrationin Extracted Vapor
EW-16Added
EW-17 and EW-18Added
Chloroform Mass Removal Rate Versus TimeHitachi GSTSan Jose, California
CJR 11/6/08 03-11903E
15
0
0.5
1
1.5
2
2.5
July 25, 2007August 22, 2007September 19, 2007
October 17, 2007November 14, 2007
December 12, 2007
January 9, 2008February 6, 2008March 5, 2008April 2, 2008April 30, 2008May 28, 2008June 25, 2008July 23, 2008August 20, 2008
Date/Time
Chl
orof
orm
Mas
s R
emov
al R
ate
(pou
nds/
wee
k)
System Off
11/3 to 12/4
EW-16 Added
EW-17 and EW-18Added
Location ID Depth Sep-07 Nov-07 Aug-08 Oct-085'
Chloroform Concentration Trend in Area of Residual Chloroform WellsHitachi GSTSan Jose, California
CJR 11/6/08 03-11903E
17
673
468
118160169
243253 248
188
237
187
124163
211
250268
230
0
100
200
300
400
500
600
700
800
May 1, 2007June 6, 2007July 12, 2007August 17, 2007September 22, 2007
October 28, 2007
December 3, 2007
January 8, 2008February 13, 2008
March 20, 2008April 25, 2008May 31, 2008July 6, 2008August 11, 2008September 16, 2008
October 22, 2008November 27, 2008
Date
Chlo
rofo
rm C
once
ntra
tion
(ug/
L)
Average of EW-5, EW-9, EW-10, and EW-13Average of EW-5, EW-9, EW-10, EW-13, and EW-16Risk-Based Target Concentration (assuming vapor migration into a home)RWQCB-SF Cleanup Goal (assuming use as a drinking water source)
FORMERBUILDING
028J
EW-1
EW-2
EW-3
EW-7
EW-6
EW-5
EW-4
EW-9
EW-10
EW-11
EW-12
EW-14
EW-13EW-15
EW-8
20,00
0-gallo
n
Holdin
g Tan
k
17,000-gallonHolding Tank
20-FootGate
20-FootGate
SB-2
SB-1
SB-3
SB-4
SB-5
SB-6
SB-7SB-8
EW-17
EW-16
EW-18
18
Soil Boring Location -April 2008
Groundwater Monitoring /Extraction Well
Construction Fence
12-foot Security Fence
EXPLANATION:
EW-12
Location of April/May 2008 Soil BoringsHitachi GSTSan Jose, California
Location ID Depth Unit Chloroform5.5 Vadose Zone
EW-1
EW-2
EW-3
EW-7
EW-6
EW-4
EW-10
EW-11
EW-14
EW-13
EW-8CPT-8CPT-7
CPT-3
CPT-4
CPT-6
CPT-2CPT-1
EW-15
CPT-5
EW-12
EW-9
A
A'
B'
B
FORMERBUILDING
028J
SB-2
SB-3
SB-4
SB-5
SB-6
SB-7SB-8EW-17
EW-5
SB-1
EW-16
EW-18
C
C'
Hydrostratigraphic Cross-SectionLocation MapHitachi GSTSan Jose, California
20
EXPLANATION:
Groundwater Monitoring/ Extraction Well
EW-12
CPT Location(April 17-19, 2007)
Soil Boring Location(April 2008)
Building 028J and all otherstructures shown have beendemolished. Structures shownare for reference only.
Figure 24Approximate Mass and Extent of Chloroform Before and After Remediation
Vadose
A AquiferA/B Aquitard
B Aquifer
Vadose
A AquiferA/B Aquitard
B Aquifer
Before RemediationMarch 2007
After RemediationOctober 2008
2.08 pounds
4.66 pounds>0.53 pounds
0.0066 pounds
0.07 to 0.24 pounds0.25 to 0.81 pounds
Total Estimated Chloroform Mass >7.27 Pounds Total Estimated Chloroform Mass ~ 0.68 Pounds
Soil Gas >RBTCs
200 feet
170 feet
Groundwater >80 ug/L
75 feet
50 feet
Groundwater >80 ug/L