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TABLE 1A
<br />CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 E. Alpine Avenue
<br />Stockton, California
<br />(Page 3 of 7)
<br />Well
<br />Sampling
<br />TOC
<br />DTW
<br />GW Elev.
<br />NAPL
<br />TPHd
<br />TPHg
<br />O&G MTBE
<br />B
<br />T
<br />E
<br />X PCBs SVOCs
<br />ID
<br />Date
<br />(feet)
<br />(feet)
<br />(feet)
<br />(feet)
<br />(pg/L)
<br />(pg/L)
<br />(pg/L) (Ng/L)
<br />(ug/L)
<br />(ug/L)
<br />(Ng/L)
<br />(pg/L) (ug/L) (Ng/L)
<br />380
<br />620 --- ---
<br />MW5
<br />09/12/07
<br />15.15
<br />36.54
<br />-21.39
<br />No
<br />810
<br />6,800
<br />---
<br /><25
<br />3,000
<br />MW4
<br />10/05/10
<br />16.78
<br />38.43
<br />-21.65
<br />No
<br />680d
<br />180,000
<br />--- <1,000
<br />4,600
<br />56,000
<br />3,800
<br />21,000
<br />MW4
<br />02/09/11
<br />16.78
<br />37.06
<br />-20.28
<br />No
<br />580d,m
<br />11 0,000d
<br />--- <1,000
<br />5,100
<br />54,000
<br />4,000
<br />22,000
<br />MW4
<br />05/18/11
<br />16.78
<br />34.12
<br />-17.34
<br />No
<br />---
<br />---
<br />--- ---
<br />---
<br />---
<br />---
<br />...
<br />MW4
<br />05/19/11
<br />16.78
<br />---
<br />---
<br />---
<br />410
<br />120,000
<br />--- <1,000
<br />3,300
<br />50,000
<br />3,700
<br />23,000
<br />MW5
<br />03/26/07
<br />15.15
<br />32.99
<br />-17.84
<br />No
<br />1,700
<br /><25,000
<br />---
<br /><250
<br />3,700
<br />1,100
<br />560
<br />1,400 --- ---
<br />MW5
<br />06/28/07
<br />15.15
<br />33.98
<br />-18.83
<br />No
<br />---
<br />7,900
<br />---
<br /><50
<br />3,100
<br />260
<br />380
<br />620 --- ---
<br />MW5
<br />09/12/07
<br />15.15
<br />36.54
<br />-21.39
<br />No
<br />810
<br />6,800
<br />---
<br /><25
<br />3,000
<br />190
<br />330
<br />610 --- ---
<br />MW5
<br />11/26/07
<br />15.15
<br />36.40
<br />-21.25
<br />No
<br />750d
<br />8,500
<br />---
<br /><25
<br />2,500
<br />250
<br />240
<br />530 --- ---
<br />MW5
<br />02/28/08
<br />15.15
<br />33.96
<br />-18.81
<br />No
<br />3,550
<br />6,270
<br />---
<br />1.88e
<br />2,060
<br />177
<br />208
<br />322 --- ---
<br />MW5
<br />05/29/08
<br />15.15
<br />34.50
<br />-19.35
<br />No
<br />3,190
<br />11,300
<br />---
<br />1.8e
<br />1,520
<br />383
<br />267
<br />524 --- ---
<br />MW5
<br />08/27/08
<br />15.15
<br />36.89
<br />-21.74
<br />No
<br />790d
<br />4,100
<br />1.5
<br />1,400
<br />150
<br />150
<br />310
<br />MW5
<br />11/13/08
<br />15.15
<br />37.20
<br />-22.05
<br />No
<br />1.000d
<br />3,000
<br />1.6
<br />1,000
<br />74
<br />110
<br />260 --- ---
<br />MW5
<br />01/28/09
<br />15.15
<br />38.07
<br />-22.92
<br />No
<br />87
<br />2,900
<br />---
<br />1.4j
<br />920
<br />11
<br />52
<br />66 --- ---
<br />MW5
<br />04/29/09
<br />15.15
<br />37.86
<br />-22.71
<br />No
<br /><50
<br />4,100
<br />---
<br /><25
<br />810
<br /><25
<br />54
<br />28 --- ---
<br />MW5
<br />07/14/09
<br />15.15
<br />39.54
<br />-24.39
<br />No
<br /><50
<br />2,700
<br />---
<br /><10
<br />510
<br />17
<br />26
<br />24 --- ---
<br />MW5
<br />10/27/09
<br />15.15
<br />39.90
<br />-24.75
<br />No
<br />---
<br />---
<br />---
<br />---
<br />---
<br />_--
<br />___
<br />___ --_ ---
<br />MW5
<br />10/28/09
<br />15.15
<br />---
<br />---
<br />69m
<br />4,900
<br />---
<br /><10
<br />1,100
<br />53
<br />210
<br />570 --- ---
<br />MW5
<br />01/25/10
<br />15.15
<br />38.10
<br />-22.95
<br />No
<br /><50
<br />6,700d
<br />---
<br /><50
<br />2,100
<br /><50
<br />110
<br />210 --- ---
<br />MW5
<br />04/07/10
<br />15.15
<br />36.16
<br />-21.01
<br />No
<br />76
<br />6,100d
<br />---
<br /><25
<br />1,600
<br />24j
<br />100
<br />89 --- ---
<br />MW5
<br />08/09/10
<br />15.15
<br />36.05
<br />-20.90
<br />No
<br />100d
<br />5,400d
<br />---
<br /><25
<br />1,100
<br />32
<br />140
<br />100 --- ---
<br />MW5
<br />10/05/10
<br />15.15
<br />36.80
<br />-21.65
<br />No
<br />---
<br />---
<br />---
<br />---
<br />-_-
<br />.--
<br />_-- ___ ---
<br />MW5
<br />10/06/10
<br />15.15
<br />---
<br />---
<br />150d
<br />6,700d
<br />---
<br /><25
<br />980
<br />21j
<br />88
<br />61 --- ---
<br />MW5
<br />02/09/11
<br />15.15
<br />35.45
<br />-20.30
<br />No
<br />120d,m
<br />3,700d
<br />---
<br /><10
<br />560
<br />64
<br />120
<br />140
<br />MW5
<br />05/18111
<br />15.15
<br />32.64
<br />-17.49
<br />No
<br />---
<br />---
<br />---
<br />---
<br />---
<br />---
<br />...
<br />--- __. ...
<br />MW5
<br />05/19/11
<br />15.15
<br />---
<br />---
<br />---
<br />70d
<br />2,100
<br />---
<br /><4.0
<br />190
<br />8.1
<br />13
<br />11 --- ---
<br />MW6
<br />11/26/07
<br />16.31
<br />37.61
<br />-21.30
<br />No
<br /><47
<br /><50
<br />---
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />MW6
<br />02/28/08
<br />16.31
<br />35.20
<br />-18.89
<br />No
<br /><47.2
<br /><50.0
<br />---
<br /><0.500
<br /><0.500
<br />7.89
<br /><0.500
<br /><0.500 --- ---
<br />MW6
<br />05/29/08
<br />16.31
<br />35.78
<br />-19.47
<br />No
<br /><47.2
<br /><50.0
<br /><0.500
<br /><0.500
<br /><0.500
<br /><0.500
<br /><0.500 --- ---
<br />MW6
<br />08/27/08
<br />16.31
<br />38.09
<br />-21.78
<br />No
<br /><47
<br /><50
<br />---
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50 --- ---
<br />MW6
<br />11/13/08
<br />16.31
<br />38.38
<br />-22.07
<br />No
<br /><47
<br /><50
<br />---
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50 --- ---
<br />MW6
<br />01/28/09
<br />16.31
<br />39.29
<br />-22.98
<br />No
<br /><50
<br /><50
<br /><0.50
<br />0.35j
<br />0.42j
<br /><0.50
<br />0.45j --- ---
<br />MW6
<br />04/29/09
<br />16.31
<br />39.00
<br />-22.69
<br />No
<br /><50
<br /><50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50 --- ---
<br />MW6
<br />07/14/09
<br />16.31
<br />40.80
<br />-24.49
<br />No
<br /><50
<br /><50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50 --- ---
<br />MW6
<br />10/27/09
<br />16.31
<br />41.10
<br />-24.79
<br />No
<br /><50
<br /><50
<br /><0.50
<br /><0.50
<br />0.37j
<br />0.048]
<br />0.26j --- ---
<br />MW6
<br />01/25/10
<br />16.31
<br />39.18
<br />-22.87
<br />No
<br /><50
<br /><50
<br />---
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50 --- ---
<br />MW6
<br />04/07/10
<br />16.31
<br />37.35
<br />-21.04
<br />No
<br /><50
<br /><50
<br />---
<br /><0.50
<br /><0.50
<br />0.36
<br /><0.50
<br />0.18j --- ---
<br />MW6
<br />08/09/10
<br />16.31
<br />37.26
<br />-20.95
<br />No
<br /><50
<br /><50
<br />---
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />0.092j --- ---
<br />MW6
<br />10/05/10
<br />16.31
<br />37.98
<br />-21.67
<br />No
<br /><50
<br />63d
<br />---
<br /><0.50
<br /><0.50
<br />0.29j
<br /><0.50
<br /><0.50 --- ---
<br />MW6
<br />02/09/11
<br />16.31
<br />36.59
<br />-20.28
<br />No
<br /><50m
<br />50j
<br />--•
<br /><0.50
<br />0.56
<br />5.5
<br />0.52
<br />3.2 --- ---
<br />MW6
<br />05/18/11 a
<br />16.31
<br />---
<br />---
<br />---
<br />---
<br />---
<br />---
<br />---
<br />...
<br />---
<br />---
<br />... --- ---
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