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TABLE IA
<br />CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 E. Alpine Avenue
<br />Stockton, California
<br />(Page 6 of 8)
<br />we!1
<br />Sampling
<br />TOC
<br />❑TW
<br />GW Elev.
<br />NAPL
<br />TPHd
<br />TPHg
<br />O&G MTBE;
<br />B
<br />T
<br />ID
<br />Bate
<br />(feet)
<br />(feet)
<br />(feet)
<br />(feet)
<br />(pglL)
<br />(N9/L)
<br />(vg/L) (P9lL)
<br />(ug/L)
<br />(Pg/L)
<br />E
<br />(pg/L)
<br />x PCBs SVOCs
<br />(poll-)
<br />(pg1L) (Ng/L)
<br />DW3
<br />02/09/11
<br />16.99
<br />37.28
<br />-20.29
<br />No
<br /><50a
<br />1,800d
<br />- <10
<br />780
<br />72
<br />71
<br />DW3
<br />05/18/11
<br />16.99
<br />34.44
<br />-17.45
<br />No
<br />-_-
<br />58
<br />DW3
<br />05/19/11
<br />16.99
<br />-
<br /><50
<br /><50
<br />- 9.7
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW3
<br />09/22/11 1
<br />16.99
<br />34.46
<br />-17.47
<br />No
<br />-
<br />-
<br />DW4
<br />07/14/09
<br />15.98
<br />41.30
<br />-25.32
<br />No
<br /><50
<br /><50
<br />- 0.81
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />10/27/09
<br />15.98
<br />41.54
<br />-25.56
<br />No
<br /><50
<br /><50
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />01/25/10
<br />15.98
<br />39.37
<br />-23.39
<br />No
<br /><50
<br /><50
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />04/07/10
<br />15.98
<br />37.47
<br />-21.49
<br />No
<br /><50
<br /><50
<br />-- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />08/09/10
<br />15.98
<br />37.55
<br />-21.57
<br />No
<br /><50
<br /><50
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />10/05/10
<br />15.98
<br />38.29
<br />-22.31
<br />No
<br /><50
<br />48j,d
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />02/09/11
<br />15.98
<br />36.86
<br />-20.88
<br />No
<br /><50a
<br /><50
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />05/18/11
<br />15.98
<br />34.02
<br />-18.04
<br />No
<br /><50b
<br /><50
<br />- <0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><0.50
<br />DW4
<br />09/22/11
<br />15.98
<br />33.88
<br />-17.90
<br />No
<br /><50a
<br />60
<br />- <0.50
<br />11
<br />7.1
<br />2.7
<br />5.7 - -
<br />EX1
<br />07/14/09
<br />16.51
<br />40.80
<br />-24.29
<br />No
<br />500
<br />170,000
<br />- <1,200
<br />34,000
<br />65,000
<br />3,000
<br />19,000
<br />EX1
<br />10/27/09
<br />16.51
<br />41.20
<br />-24.69
<br />No
<br />3,500d
<br />110,000
<br />- <1,200
<br />22,000
<br />54,000
<br />2,300
<br />14,000
<br />EX1
<br />01/25/10
<br />16.51
<br />39.35
<br />-22.84
<br />No
<br />400d
<br />120,OOOd
<br />- <1,200
<br />18,000
<br />54,000
<br />2,400
<br />16,000
<br />EX1
<br />04/07/10
<br />16.51
<br />37.47
<br />-20.96
<br />No
<br />990
<br />150,000
<br />- <1,000
<br />28,000
<br />66,000
<br />3,600
<br />21,000
<br />EX1
<br />08/09/10
<br />16.51
<br />37.33
<br />-20.82
<br />No
<br />-
<br />-
<br />EX1
<br />08/10/10
<br />16.51
<br />-
<br />-
<br />700d
<br />130,OOOd
<br />- <1,000
<br />25,000
<br />65,000
<br />3,100
<br />19,000
<br />EX1
<br />10/05/10
<br />16.51
<br />38.12
<br />-21.61
<br />No
<br />-
<br />EX1
<br />10/06/10
<br />16.51
<br />-
<br />-
<br />-
<br />1,400d
<br />240,000
<br />- <1,000
<br />26,000
<br />66,000
<br />3,600
<br />20,000
<br />EX1
<br />02/09/11
<br />16.51
<br />36.70
<br />-20.19
<br />No
<br />910a,d
<br />130,OOOd
<br />- <1,000
<br />19,000
<br />56,000
<br />3,000
<br />17,000
<br />EX1
<br />05/18/11
<br />16.51
<br />33.87
<br />-17.36
<br />No
<br />_
<br />-
<br />-
<br />EX1
<br />05/19/11
<br />16.51
<br />-
<br />--
<br />1,200d
<br />160,000
<br />- <1,000
<br />20,000
<br />68,000
<br />4,100
<br />24,000
<br />EX7
<br />09/22/11 1
<br />16.51
<br />34.04
<br />-17.53
<br />No
<br />-
<br />-
<br />- -
<br />-
<br />-
<br />-
<br />- -
<br />EX2
<br />07/14/09
<br />16.83
<br />41.20
<br />-24.37
<br />No
<br />740
<br />170,000
<br />- <1,200
<br />47,000
<br />69,000
<br />3,400
<br />19,000
<br />EX2
<br />10/27/09
<br />16.83
<br />41.53
<br />-24.70
<br />No
<br />2,700d
<br />70,000
<br />- <1,200
<br />22,000
<br />29,000
<br />1,300
<br />7,500
<br />EX2
<br />01/25/10
<br />16.83
<br />39.69
<br />-22.86
<br />No
<br />710d
<br />120,OOOd
<br />- <1,000
<br />35,000
<br />44,000
<br />1,400
<br />9,500
<br />EX2
<br />04/07/10
<br />16.83
<br />37.81
<br />-20.98
<br />No
<br />820
<br />170,000
<br />- <500
<br />50,000
<br />73,000
<br />3,800
<br />24,000
<br />EX2
<br />08/09/10
<br />16.83
<br />37.70
<br />-20.87
<br />No
<br />-.
<br />-
<br />EX2
<br />08/10/10
<br />16.83
<br />-
<br />-
<br />890d
<br />150,OOOd
<br />- <1,000
<br />45,000
<br />71,000
<br />2,900
<br />20,000
<br />EX2
<br />10/05/10
<br />16.83
<br />38.45
<br />-21.62
<br />No
<br />-
<br />-
<br />-
<br />EX2
<br />10/06/10
<br />16.83
<br />-
<br />-
<br />1,500d
<br />280,000
<br />- <1,000
<br />46,000
<br />67,000
<br />3,300
<br />20,000
<br />EX2
<br />02/09/11
<br />16.83
<br />37.08
<br />-20.25
<br />No
<br />670a,d
<br />150,OOOd
<br />-- <1,000
<br />43,000
<br />73,000
<br />3,600
<br />21,000 -
<br />EX2
<br />05/18/11
<br />16.83
<br />34.13
<br />-17.30
<br />No
<br />-
<br />-
<br />EX2
<br />EX2
<br />05/19/11
<br />16.83
<br />-
<br />950d
<br />160,000
<br />- <1,000
<br />35,000
<br />64,000
<br />2,700
<br />23,000
<br />09/22/11 1
<br />16.83
<br />34.38
<br />-17.55
<br />No
<br />-
<br />-
<br />- -
<br />-
<br />-
<br />-
<br />- - -
<br />
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