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TABLE 2
<br />Historical Groundwater Monitoring & Analytical Data
<br />Stockton Charter Way Commingled Plume
<br />440, 441, and 508 West Charter Way, 1426, and 1444 South Lincoln Street, Stockton, CA
<br />Well No.
<br />Date
<br />Notes
<br />TOC
<br />Elevation
<br />(ft -MSL)
<br />Depth
<br />to
<br />Water
<br />(feet)
<br />Measured
<br />SPH
<br />Thickness
<br />(feet)
<br />Calc.
<br />GW
<br />Elev.
<br />(ft -MSL)
<br />TPHg
<br />(p9/L)
<br />TPHd
<br />(p9/L)
<br />Motor
<br />Oil
<br />B
<br />(p9/L)
<br />T
<br />(p9/L)
<br />E
<br />(p9/L)
<br />X
<br />(p9/L)
<br />MTBE
<br />(p9/L)
<br />TBA
<br />(p9/L)
<br />DIPE
<br />(p9/L)
<br />ETBE
<br />(p9/L)
<br />TAME
<br />(p9/L)
<br />Ethanol
<br />(p9/L)
<br />McOH
<br />(p9/L)
<br />1'2
<br />DCA
<br />(p9/L)
<br />EDB
<br />(p9/L)
<br />D.O.
<br />(m9/L)
<br />Comments
<br />SLVE-1 07/23/07
<br />11.06 18.25
<br />0.00
<br />-7.19
<br />120,000
<br />9,300
<br />24,000
<br />3,400
<br />20,000
<br />3,000
<br /><250
<br /><50
<br /><50
<br /><50
<br /><50
<br />-
<br />0.6
<br />10/16/07
<br />20.51
<br />0.00
<br />-9.45
<br />140,000
<br />9,600
<br />25,000
<br />3,800
<br />22,000
<br />1,900
<br /><250
<br /><50
<br /><50
<br /><50
<br /><50
<br /><50
<br />-
<br />01/15/08
<br />20.01
<br />0.00
<br />-8.95
<br />110,000
<br />7,600
<br />20,000
<br />2,800
<br />17,000
<br />1,500
<br /><250
<br /><50
<br /><50
<br /><50
<br /><50
<br /><50
<br />04/14/08
<br />18.80
<br />0.00
<br />-7.74
<br />130,000
<br />9,100
<br />23,000
<br />3,200
<br />19,000
<br />1,600
<br /><250
<br /><50
<br /><50
<br /><50
<br /><50
<br /><50
<br />07/14/08
<br />19.15
<br />0.00
<br />-8.09
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />07/15/08
<br />-
<br />-
<br />-
<br />130,000
<br />9,400
<br />24,000
<br />3,400
<br />19,000
<br />1,800
<br /><150
<br /><25
<br /><25
<br /><25
<br />34
<br /><25
<br />10/28/08
<br />20.52
<br />0.00
<br />-9.46
<br />120,000
<br />9,300
<br />14,000
<br />3,800
<br />19,000
<br />1,600
<br /><150
<br /><25
<br /><25
<br /><25
<br />35
<br /><25
<br />0.1
<br />01/27/09
<br />20.50
<br />0.00
<br />-9.44
<br />130,000
<br />10,000
<br />17,000
<br />3,900
<br />19,000
<br />1,400
<br /><150
<br /><25
<br /><25
<br /><25
<br />38
<br /><25
<br />5.7
<br />04/27/09
<br />19.36
<br />0.00
<br />-8.30
<br />130,000
<br />9,400
<br />24,000
<br />3,400
<br />19,000
<br />1,300
<br /><250
<br /><50
<br /><50
<br /><50
<br /><50
<br /><50
<br />1.4
<br />07/22/09
<br />19.77
<br />0.00
<br />-8.71
<br />100,000
<br />8,900
<br />24,000
<br />3,200
<br />18,000
<br />1,400
<br /><250
<br /><50
<br /><50
<br /><50
<br /><50
<br /><50
<br />1.6
<br />10/14/09
<br />20.54
<br />0.00
<br />-9.48
<br />120,000
<br />8,800
<br />22,000
<br />3,200
<br />18,000
<br />1,000
<br /><200
<br /><40
<br /><40
<br /><40
<br /><40
<br /><40
<br />1.1
<br />01/12/10
<br />20.31
<br />0.00
<br />-9.25
<br />120,000
<br />8,300
<br />21,000
<br />2,800
<br />16,000
<br />1,100
<br /><200
<br /><40
<br /><40
<br /><40
<br /><40
<br /><40
<br />1.9
<br />05/24/10
<br />18.00
<br />0.00
<br />-6.94
<br />94,000
<br />12,000
<br />27,000
<br />4,100
<br />22,000
<br />1,700
<br /><1,000
<br /><200
<br /><200
<br /><200
<br /><50
<br /><100
<br />-
<br />10/04/10
<br />11.32 19.20
<br />0.00
<br />-7.88
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />1.1
<br />10/14/10
<br />-
<br />-
<br />-
<br />120,000
<br />7,400
<br />23,000
<br />3,200
<br />16,000
<br />1,600
<br /><250
<br /><10
<br /><10
<br /><10
<br />17
<br /><10
<br />-
<br />04/04/11
<br />16.80
<br />0.00
<br />-5.48
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.74
<br />A Zone
<br />04/06/11
<br />-
<br />-
<br />-
<br />93,000
<br />7,700
<br />21,000
<br />3,200
<br />17,000
<br />1,300
<br /><200
<br /><40
<br />-
<br />A Zone
<br />10/03/11
<br />17.15
<br />0.00
<br />-5.83
<br />99,000
<br />5,700
<br />17,000
<br />2,400
<br />14,000
<br />690
<br />96
<br />11
<br />0.68
<br />04/09/12
<br />17.40
<br />0.00
<br />-6.08
<br />62,000
<br />4,800
<br />7,000
<br />1,800
<br />10,000
<br />480
<br />110
<br /><20
<br />1.52
<br />10/16/12
<br />17.68
<br />0.00
<br />-6.36
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.44
<br />10/17/12
<br />-
<br />-
<br />-
<br />77,000
<br />5,100
<br />9,200
<br />2,400
<br />14,000
<br />400
<br /><90
<br /><20
<br />-
<br />04/22/13
<br />16.21
<br />0.00
<br />-4.89
<br />70,000
<br />5,300
<br />4,300
<br />2,600
<br />14,000
<br />420
<br />200
<br /><20
<br />1.87
<br />10/14/13
<br />17.68
<br />0.00
<br />-6.36
<br />59,000
<br />6,500
<br />2,100
<br />2,600
<br />12,000
<br />500
<br /><90
<br /><20
<br />1.91
<br />04/22/14
<br />17.11
<br />0.00
<br />-5.79
<br />71,000
<br />4,300
<br />1,300
<br />2,300
<br />11,000
<br />290
<br />120
<br /><20
<br />0.55
<br />10/20/14
<br />18.82
<br />0.00
<br />-7.50
<br />58,000
<br />5,100
<br />1,100
<br />2,400
<br />12,000
<br />330
<br /><90
<br /><20
<br />0.58
<br />04/27/15
<br />17.72
<br />0.00
<br />-6.40
<br />74,000
<br />5,100
<br />960
<br />2,100
<br />10,000
<br />180
<br /><5.0
<br /><0.50
<br />0.41
<br />10/19/15
<br />19.62
<br />0.00
<br />-8.30
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.20
<br />10/20/15
<br />-
<br />-
<br />-
<br />63,000
<br />4,300
<br />750
<br />2,400
<br />11,000
<br />310
<br /><166
<br /><16.6
<br />-
<br />04/11/16
<br />17.41
<br />0.00
<br />-6.09
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.20
<br />04/12/16
<br />-
<br />-
<br />-
<br />49,000
<br />4,400
<br />330
<br />2,400
<br />10,000
<br />220
<br />290
<br /><12.5
<br />-
<br />12/12/16
<br />18.99
<br />0.00
<br />-7.67
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.48
<br />12/14/16
<br />-
<br />-
<br />-
<br />55,000
<br />4,400
<br />150
<br />2,200
<br />9,200
<br />280
<br /><125
<br />110
<br />-
<br />04/10/17
<br />11.26 13.11
<br />0.00
<br />-1.85
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />04/12/17
<br />-
<br />-
<br />-
<br />43,000
<br />4,500
<br />310
<br />1,900
<br />9,300
<br />290
<br />850
<br /><25.0
<br />0.15
<br />10/24/17
<br />15.61
<br />0.00
<br />-4.35
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.76
<br />10/25/17
<br />-
<br />-
<br />-
<br />40,000
<br />4,000
<br />140
<br />1,600
<br />9,000
<br />250
<br />200
<br /><12.5
<br />-
<br />05/07/18
<br />14.55
<br />0.00
<br />-3.29
<br />38,000
<br />3,900
<br />110
<br />1,600
<br />6,300
<br />270
<br />290
<br /><12.5
<br />0.15
<br />05/28/19
<br />INA
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />Unable to access
<br />11/25/19
<br />15.11
<br />0.00
<br />-3.85
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />0.44
<br />12/03/19
<br />-
<br />-
<br />-
<br />20,000
<br />2,200
<br />46
<br />470
<br />1,200
<br />150
<br /><200
<br />48
<br />-
<br />04/01/20
<br />NS
<br />14.30
<br />0.03
<br />-3.01
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />-
<br />10/14/20
<br />G
<br />-
<br />-
<br />-
<br />7,600
<br />780
<br />2,300
<br />120
<br />2,900
<br />78
<br />-
<br />-
<br />-
<br />11/12/20
<br />16.11
<br />0.00
<br />-4.85
<br /><100
<br /><0.5
<br /><0.5
<br /><0.5
<br /><1.5
<br /><0.5
<br /><5
<br /><0.5
<br />8.65
<br />11/12/20
<br />G
<br />-
<br />-
<br />-
<br />3,000
<br />740
<br />70
<br />250
<br />1,100
<br />94
<br />-
<br />-
<br />-
<br />12/11/20
<br />G
<br />3,200
<br />320
<br />540
<br />140
<br />1,400
<br />34
<br />01/13/21
<br />G
<br />4,800
<br />500
<br />540
<br />290
<br />1,800
<br />31
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