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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 8)
<br />Well
<br />Sampling
<br />TOC
<br />DTW
<br />GW Elev.
<br />NAPL
<br />TPHd
<br />TPHg
<br />08G MTBE
<br />e
<br />11)
<br />Date
<br />{feet}
<br />(feet)
<br />(feet)
<br />(feet)
<br />(Ng/L)
<br />(u9/0
<br />(ug/Q (Ng[-)
<br />T
<br />E
<br />X PCBs SVOCs
<br />(Ng/L)
<br />(U9n-)
<br />(#91L)
<br />(IWL) (pg/L) (p91L)
<br />MW4
<br />10/27/09
<br />16.78
<br />41.55
<br />-24.77
<br />No
<br />MW4
<br />MW4
<br />10/28/09
<br />01/25/10
<br />16.78
<br />-
<br />-
<br />2,200d
<br />120,000
<br />- <1,200
<br />6,100
<br />61,000
<br />4,100
<br />24,000
<br />MW4
<br />04/07/10
<br />16.78
<br />39.68
<br />-22.90
<br />No
<br />520d
<br />150,000d
<br />- <1,200
<br />5,600
<br />54,000
<br />4,400
<br />26,000 -
<br />MW4
<br />08/09/10
<br />16.78
<br />37.80
<br />-21.02
<br />No
<br />360
<br />110,000
<br />- <1,000
<br />5,800
<br />57,000
<br />4,000
<br />24,000
<br />MW4
<br />10/05/10
<br />16.78
<br />37.69
<br />-20.91
<br />No
<br />520d
<br />99.000d
<br />- <1,000
<br />4,500
<br />49,000
<br />3,100
<br />19,000
<br />MW4
<br />02/09/11
<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 />05/18/11
<br />16.78
<br />37.06
<br />-20.28
<br />No
<br />580a,d
<br />110,000d
<br />- <1,000
<br />5,100
<br />54,000
<br />4,000
<br />22,000
<br />16.78
<br />34.12
<br />-17.34
<br />No
<br />-
<br />-- -
<br />MW4
<br />MW4
<br />05/19/11
<br />09122/11
<br />16.78
<br />-
<br />---
<br />410
<br />120,000
<br />- <1,000
<br />3,300
<br />50,000
<br />3,700
<br />23,000
<br />1
<br />16.78
<br />34.28
<br />-17.50
<br />No
<br />-
<br />-
<br />M
<br />MW5
<br />03/26/07
<br />15.15
<br />32.99
<br />-17.84
<br />No
<br />1,700
<br /><25,000
<br />- <250
<br />3,700
<br />1,100
<br />560
<br />MW5
<br />06/28/07
<br />15.15
<br />33.98
<br />-18.83
<br />No
<br />---
<br />7,900
<br />1,400
<br />MW5
<br />09/12/07
<br />15.15
<br />36.54
<br />-21.39
<br />No
<br />810
<br />6,800
<br />- <50
<br />3,100
<br />260
<br />380
<br />620
<br />MW5
<br />11/26/07
<br />15.15
<br />36.40
<br />-21.25
<br />No
<br />750d
<br />- <25
<br />3,000
<br />190
<br />330
<br />610
<br />MW5
<br />02/28/08
<br />15.15
<br />33.96
<br />-18.81
<br />No
<br />3,550
<br />8,500
<br />- <25
<br />2,500
<br />250
<br />240
<br />530
<br />MW5
<br />05/29/08
<br />15.15
<br />34.50
<br />-19.35
<br />No
<br />3,190
<br />6,270
<br />- 1.88e
<br />2,060
<br />177
<br />208
<br />322
<br />MW5
<br />08/27/08
<br />15.15
<br />36.89
<br />-21.74
<br />No
<br />790d
<br />11,300
<br />- 1.8e
<br />1,520
<br />383
<br />267
<br />524
<br />MW5
<br />11/13/08
<br />15.15
<br />37.20
<br />-22.05
<br />No
<br />1,000d
<br />4,100
<br />1.5
<br />1,400
<br />150
<br />150
<br />310
<br />MW5
<br />01/28/09
<br />15.15
<br />38.07
<br />-22.92
<br />No
<br />87
<br />3,000
<br />- 1.6
<br />1,000
<br />74
<br />110
<br />260 -
<br />MW5
<br />04/29/09
<br />15.15
<br />37.86
<br />-22.71
<br />No
<br /><50
<br />2,900
<br />4,100
<br />- 1.4j
<br />920
<br />11
<br />52
<br />66
<br />MW5
<br />07/14/09
<br />15.15
<br />39.54
<br />-24.39
<br />No
<br /><50
<br />2,700
<br />- <25
<br />810
<br /><25
<br />54
<br />-
<br />MW5
<br />10/27/09
<br />15.15
<br />39.90
<br />-24.75
<br />No
<br />--
<br />- <10
<br />10
<br />510
<br />17
<br />26
<br />24
<br />MW5
<br />MW5
<br />10/28/09
<br />15.15
<br />-
<br />-
<br />-
<br />69m
<br />4,900
<br />- <10
<br />1,100
<br />53
<br />210
<br />570 -
<br />01/25/10
<br />15.15
<br />38.10
<br />-22.95
<br />No
<br /><50
<br />6,700d
<br />- <50
<br />2,100
<br /><50
<br />110
<br />MW5
<br />04/07/10
<br />15.15
<br />36.16
<br />-21.01
<br />No
<br />76
<br />6,100d
<br />- <25
<br />1,600
<br />24j
<br />100
<br />210
<br />MW5
<br />08/09/10
<br />15.15
<br />36.05
<br />-20.90
<br />No
<br />100d
<br />5,400d
<br />- <25
<br />1,100
<br />89
<br />MW5
<br />10/05/10
<br />15.15
<br />36.80
<br />-21.65
<br />No
<br />-
<br />32
<br />140
<br />100 - -
<br />MW5
<br />10/06/10
<br />15.15
<br />-
<br />---
<br />-
<br />150d
<br />6,700d
<br />_ _
<br />- <25
<br />980
<br />21j
<br />88
<br />-
<br />MW5
<br />02/09/11
<br />15.15
<br />35.45
<br />-20.30
<br />No
<br />120a,d
<br />3,700d
<br />- <10
<br />560
<br />64
<br />61
<br />MW5
<br />05/18/11
<br />15.15
<br />32.64
<br />-17.49
<br />No
<br />120
<br />140
<br />MW5
<br />05/19/11
<br />15.15
<br />-
<br />70d
<br />2,100
<br />- <4.0
<br />190
<br />8.1
<br />13
<br />-
<br />MW5
<br />09/22/11
<br />15.15
<br />32.65
<br />-17.50
<br />No
<br />390a,d
<br />1,400d
<br /><2.0
<br />100
<br />2.0
<br />11
<br />7.1
<br />2.9
<br />MW6
<br />11/26/07
<br />16.31
<br />37.61
<br />-21.30
<br />No
<br /><47
<br /><50
<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 />- <0.500
<br /><0.500
<br />7.89
<br /><0.500
<br />_
<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 />_
<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 />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />_
<br /><0.50
<br />MW6
<br />MW6
<br />11/13/08
<br />01/28/09
<br />16.31
<br />38.38
<br />-22.07
<br />No
<br /><47
<br /><50
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />_
<br /><0.50 -
<br />MW6
<br />04/29/09
<br />16.31
<br />39.29
<br />-22.98
<br />No
<br /><50
<br /><50
<br />- <0.50
<br />0.35
<br />1
<br />0.42'
<br />J
<br />< 0.50
<br />0.45j - -
<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 />
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