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TABLE IA
<br />CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 East Alpine Avenue
<br />Stockton, California
<br />(Page 11 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) (Ng/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (Ug/L) (ug/L) (ug/L) (Ng/L)
<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 />-
<br />EX1
<br />EX1
<br />08/10/10
<br />16.51
<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 />- -
<br />EX1
<br />10/06/10
<br />16.51
<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 />EX1
<br />09/22/11 1
<br />16.51
<br />34.04
<br />-17.53
<br />No
<br />--
<br />---
<br />--- -- --
<br />EX1
<br />11/30/11
<br />16.51
<br />31.81
<br />-15.30
<br />No
<br />7,OOOa,d
<br />160,000
<br />--- <1,000
<br />16,000
<br />65,000
<br />3,500
<br />20,000 - -
<br />EX1
<br />03/14/12
<br />16.51
<br />31.79
<br />-15.28
<br />No
<br />•--
<br />---
<br />-
<br />---
<br />---
<br />- - --
<br />EX1
<br />03/15/12
<br />16.51
<br />•••
<br />--
<br />---
<br />4,OOOa,d
<br />95,000
<br />--- <1,000
<br />6,600
<br />38,000
<br />2,200
<br />14,000 - --
<br />EX1
<br />05/03/12
<br />16.51
<br />31.53
<br />-15.02
<br />No
<br />-
<br />-
<br />-
<br />--
<br />EX1
<br />05/04/12
<br />16.51
<br />---
<br />--
<br />---
<br />4,800a,d
<br />86,000
<br />--- <1,000
<br />5,800
<br />41,000
<br />2,300
<br />15,000 - - -
<br />EX1
<br />08/24/12
<br />16.51
<br />33.17
<br />-16.66
<br />No
<br />8,900a,d
<br />130,000
<br />--- <1,000
<br />8,900
<br />48,000
<br />2,700
<br />17,000 -
<br />EX1
<br />10/24/12
<br />16.51
<br />33.49
<br />-16.98
<br />No
<br />7,400a,d
<br />140,000
<br />--- <1,000
<br />8,500
<br />45,000
<br />2,100
<br />13,000 - -
<br />EX1
<br />01/30/13
<br />16.51
<br />31.82
<br />-15.31
<br />No
<br />.--
<br />--
<br />-
<br />-
<br />EX1
<br />02/01/13
<br />16.51
<br />•-•
<br />---
<br />---
<br />3,100a,d
<br />32,000
<br />--- <400
<br />2,700
<br />19,000
<br />1,100
<br />6,400 - -
<br />EX1
<br />05/03/13
<br />16.51
<br />31.63
<br />-15.12
<br />No
<br />1,900a,d
<br />57,000
<br />- <400
<br />2,800
<br />23,000
<br />1,500
<br />8,800 -- -
<br />EX1
<br />08/21/13
<br />16.51
<br />32.84
<br />-16.33
<br />No
<br />---
<br />- --
<br />---
<br />--•
<br />---
<br />--- - -
<br />EX1
<br />08/22/13
<br />16.51
<br />--•
<br />--
<br />---
<br />16,OOOa,d
<br />110,000
<br />- <500
<br />12,000
<br />43,000
<br />2,300
<br />22,000 -- -
<br />EX1
<br />12/18/13
<br />16.51
<br />31.45
<br />-14.94
<br />No
<br />15,OOOa,d
<br />97,000
<br /><500
<br />6,100
<br />28,000
<br />1,400
<br />17,000 -
<br />EX1
<br />03/19/14
<br />16.51
<br />32.04
<br />-15.53
<br />No
<br />-
<br />- --
<br />---
<br />---
<br />---
<br />--- -- --
<br />EX1
<br />03/20/14
<br />16.51
<br />--
<br />---
<br />---
<br />16,OOOa,d
<br />100,000
<br /><500
<br />5,200
<br />25,000
<br />1,300
<br />18,000 - -
<br />EX1
<br />06/12/14
<br />16.51
<br />33.05
<br />-16.54
<br />No
<br />---
<br />16,000
<br /><40
<br />200
<br />1,600
<br />120
<br />6,800 -
<br />EX1
<br />06/24/14
<br />16.51
<br />33.18
<br />-16.67
<br />No
<br />12,OOOa,d
<br />•••
<br />--
<br />---
<br />EX1
<br />08/01/14 o
<br />16.51
<br />34.40
<br />-17.89
<br />No
<br />-
<br />---
<br />- ---
<br />---
<br />--
<br />---
<br />---
<br />EX1
<br />08/20/14
<br />16.51
<br />35.14
<br />-18.63
<br />No
<br />17,OOOa,d
<br />37,000
<br />--- <100
<br />230
<br />5,800
<br />590
<br />12,000 ---
<br />EX1
<br />10/28/14
<br />16.51
<br />36.15
<br />-19.64
<br />No
<br />12,OOOa,d
<br />16,000
<br /><40
<br /><40
<br />750
<br />110
<br />3,700 -
<br />EXi
<br />02/05/15
<br />16.51
<br />36.16
<br />-19.65
<br />No
<br />---
<br />---
<br />---
<br />---
<br />---
<br />---
<br />--- --- -
<br />EX1
<br />02/06/15
<br />16.51
<br />---
<br />---
<br />---
<br />13,OOOa,d
<br />51,000
<br />--- <40
<br />130
<br />5,500
<br />1,000
<br />17,000
<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 />-
<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 />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 />
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