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TABLE 1A
<br />CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 East Alpine Avenue
<br />Stockton, California
<br />(Page 5 of 13)
<br />Well Sampling TOC DTW GW Elev. NAPL TPHd TPHg O&G MTBE B T E X PCBs SVOCs
<br />ID Date (feet) (feet) (feet) (feet) (ug/L) (Ng/L) (Ng/L) (ug/L) (ug/L) (Ng/L) (ug/L) (ug/L) (ug/L) (Ng/L)
<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 />1,400 - -
<br />MW5
<br />06/28/07
<br />15.15
<br />33.98
<br />-18.83
<br />No
<br />---
<br />7,900
<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 /><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 /><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 />--- 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 />.-- 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,OOOd
<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 />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 />- <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 /><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 />MW5
<br />10/28/09
<br />15.15
<br />---
<br />---
<br />69m
<br />4,900
<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 />--- <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 /><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 /><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 />MW5
<br />10/06/10
<br />15.15
<br />-
<br />---
<br />150d
<br />6,700d
<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 />120a,d
<br />3,700d
<br />--- <10
<br />560
<br />64
<br />120
<br />140 -
<br />MW5
<br />05/18/11
<br />15.15
<br />32.64
<br />-17.49
<br />No
<br />---
<br />--- ---
<br />---
<br />--
<br />---
<br />--
<br />MW5
<br />05/19/11
<br />15.15
<br />---
<br />---
<br />70d
<br />2,100
<br />--- <4.0
<br />190
<br />8.1
<br />13
<br />11 ---
<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 />7.1
<br />2.9 ---
<br />MW5
<br />11/30/11
<br />15.15
<br />31.51
<br />-16.36
<br />No
<br />--
<br />- --
<br />---
<br />MW5
<br />12/01/11
<br />15.15
<br />.--
<br />-
<br />350a,d
<br />1,800
<br /><2.0
<br />150
<br />68
<br />28
<br />58 ---
<br />MW5
<br />03/14/12
<br />15.15
<br />30.54
<br />-15.39
<br />No
<br />---
<br />--
<br />---
<br />MW5
<br />03/15/12
<br />15.15
<br />---
<br />--
<br />---
<br />450a,d
<br />1,700d
<br />- <2.5
<br />130
<br />18
<br />42
<br />55 ---
<br />MW5
<br />05/03/12
<br />15.15
<br />30.25
<br />-15.10
<br />No
<br />360a
<br />1,500d
<br />--- <2.0
<br />91
<br /><2.0
<br />20
<br />12 --- ---
<br />MW5
<br />08/24/12
<br />15.15
<br />31.97
<br />-16.82
<br />No
<br />420a,d
<br />1,100d
<br />- <2.0
<br />99
<br /><2.0
<br />12
<br />3.1 -
<br />MW5
<br />10/24/12
<br />15.15
<br />32.23
<br />-17.08
<br />No
<br />360a,d
<br />910d
<br /><2.0
<br />62
<br /><2.0
<br />3.7
<br /><2.0 ...
<br />MW5
<br />01/30/13
<br />15.15
<br />30.78
<br />-15.63
<br />No
<br />-
<br />---
<br />-••
<br />-•-
<br />.--
<br />MW5
<br />01/31/13
<br />15.15
<br />--
<br />-••
<br />-
<br />65a,d
<br />390d
<br />--- <0.50
<br />31
<br /><0.50
<br />1.0
<br /><0.50
<br />MW5
<br />05/03/13
<br />15.15
<br />30.39
<br />-15.24
<br />No
<br />140a,d
<br />510d
<br /><0.50
<br />33
<br /><0.50
<br />1.4
<br />0.72 -
<br />MW5
<br />08/21/13
<br />15.15
<br />31.48
<br />-16.33
<br />No
<br />300a,d
<br />2,100d
<br /><0.50
<br />28
<br />9.2
<br />0.57
<br />15
<br />MW5
<br />12/18/13
<br />15.15
<br />31.00
<br />-15.85
<br />No
<br />120a,d
<br />300d
<br />- <0.50
<br />2.8
<br />1.5
<br /><0.50
<br />4.0
<br />MW5
<br />03/19/14
<br />15.15
<br />30.82
<br />-15.67
<br />No
<br />---
<br />---
<br />---
<br />---
<br />-
<br />--- ...
<br />MW5
<br />03/20/14
<br />15.15
<br />---
<br />---
<br />---
<br />160a,d
<br />350a
<br />-•- <0.50
<br />1.0
<br />0.82
<br /><0.50
<br />4.2
<br />MW5
<br />06/12/14 m
<br />15.15
<br />31.69
<br />-16.54
<br />No
<br />-
<br />--- -
<br />MW5
<br />08/01/14 m
<br />15.15
<br />--
<br />MW5
<br />10/28/14 m
<br />15.15
<br />--
<br />---
<br />---
<br />---
<br />-
<br />-
<br />MW5
<br />02/05/15
<br />15.15
<br />35.03
<br />-19.88
<br />No
<br />---
<br />--- ---
<br />---
<br />---
<br />---
<br />--
<br />MW5
<br />02/06/15
<br />15.15
<br />---
<br />---
<br />---
<br />59a,d
<br /><50
<br />--- <0.50
<br />0.70
<br />0.89
<br /><0.50
<br />3.2 ---
<br />
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