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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 12 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) (Ng/L) (Ng/L) (ug/L) (Ng/L) (Ug/L) (Ng/L) (ug/L)
<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 />- --
<br />--
<br />-
<br />---
<br />--- --- ---
<br />EX2
<br />05/19/11
<br />16.83
<br />--
<br />.-•
<br />--
<br />950d
<br />160,000
<br />- <1,000
<br />35,000
<br />64,000
<br />2,700
<br />23,000 ---
<br />EX2
<br />09/22/11 1
<br />16.83
<br />34.38
<br />-17.55
<br />No
<br />---
<br />-
<br />---
<br />•-•
<br />--
<br />EX2
<br />11/30/11
<br />16.83
<br />33.10
<br />-16.27
<br />No
<br />6,500a,d
<br />150,000
<br /><1,000
<br />19,000
<br />66,000
<br />2,800
<br />19,000 -
<br />EX2
<br />03/14/12
<br />16.83
<br />32.16
<br />-15.33
<br />No
<br />-
<br />-
<br />--
<br />--
<br />EX2
<br />03/15/12
<br />16.83
<br />-
<br />-
<br />11,000a
<br />170,000
<br />--- <1,000
<br />6,400
<br />84,000
<br />4,100
<br />28,000
<br />EX2
<br />05/03/12
<br />16.83
<br />31.82
<br />-14.99
<br />No
<br />--
<br />-
<br />-
<br />-
<br />-
<br />EX2
<br />05/04/12
<br />16.83
<br />---
<br />-•
<br />---
<br />7,400a,d
<br />110,000
<br />- <1,000
<br />5,500
<br />70,000
<br />3,300
<br />21,000
<br />EX2
<br />08/24/12
<br />16.83
<br />33.53
<br />-16.70
<br />No
<br />13,OOOa,d
<br />180,000
<br /><1,000
<br />16,000
<br />68,000
<br />3,300
<br />22,000
<br />EX2
<br />10/24/12
<br />16.83
<br />33.82
<br />-16.99
<br />No
<br />12,OOOa,d
<br />220,000
<br /><1,000
<br />20,000
<br />51,000
<br />2,300
<br />14,000
<br />EX2
<br />01/30/13
<br />16.83
<br />32.19
<br />-15.36
<br />No
<br />-
<br />--
<br />--
<br />---
<br />---
<br />EX2
<br />02/01/13
<br />16.83
<br />---
<br />---
<br />---
<br />3,100a,d
<br />66,000
<br />--- <500
<br />4,900
<br />31,000
<br />1,700
<br />11,000
<br />EX2
<br />05/03/13
<br />16.83
<br />31.98
<br />-15.15
<br />No
<br />5,500a,d
<br />170,000
<br /><400
<br />20,000
<br />60,000
<br />3,500
<br />21,000 --
<br />EX2
<br />08/21/13
<br />16.83
<br />33.20
<br />-16.37
<br />No
<br />-
<br />---
<br />--
<br />--
<br />--
<br />---
<br />EX2
<br />08/22/13
<br />16.83
<br />---
<br />--
<br />--
<br />21,OOOa,d
<br />110,000
<br />- <500
<br />14,000
<br />37,000
<br />2,400
<br />25,000
<br />EX2
<br />12/18/13
<br />16.83
<br />32.25
<br />-15.42
<br />No
<br />15,OOOa,d
<br />110,000
<br /><500
<br />11,000
<br />35,000
<br />1,900
<br />23,000 - -
<br />EX2
<br />03/19/14
<br />16.83
<br />32.47
<br />-15.64
<br />No
<br />--
<br />•-•
<br />•-•
<br />---
<br />---
<br />EX2
<br />03/20/14
<br />16.83
<br />---
<br />--
<br />17,OOOa,d
<br />100,000
<br /><500
<br />8,300
<br />28,000
<br />1,600
<br />22,000 --- ---
<br />EX2
<br />06/12/14
<br />16.83
<br />32.97
<br />-16.14
<br />No
<br />-
<br />29,000
<br /><100
<br />430
<br />3,200
<br />210
<br />12,000 -
<br />EX2
<br />06/24/14
<br />16.83
<br />33.60
<br />-16.77
<br />No
<br />9,300a,d
<br />-
<br />-
<br />--•
<br />•-•
<br />---
<br />EX2
<br />08/01/14 o
<br />16.83
<br />35.15
<br />-18.32
<br />No
<br />-
<br />--
<br />- --
<br />---
<br />--•
<br />---
<br />EX2
<br />08/20/14
<br />16.83
<br />35.71
<br />-18.88
<br />No
<br />19,OOOa,d
<br />49,000
<br />- <100
<br />340
<br />5,000
<br />620
<br />16,000 -
<br />EX2
<br />10/28/14
<br />16.83
<br />36.67
<br />-19.84
<br />No
<br />18,OOOa,d
<br />21,000
<br />- <50
<br /><50
<br />800
<br />110
<br />5,300
<br />EX2
<br />02/05/15
<br />16.83
<br />36.60
<br />-19.77
<br />No
<br />---
<br />---
<br />---
<br />---
<br />---
<br />---
<br />EX2
<br />02/06/15
<br />16.83
<br />---
<br />---
<br />---
<br />12,OOOa,d
<br />47,000
<br /><50
<br />140
<br />3,100
<br />760
<br />13,000 ---
<br />Grab Groundwater Samples
<br />W-34-SVE1
<br />09/26/11
<br />--
<br />•-•
<br />2,900d
<br />9,800d
<br />450
<br />4,800
<br /><100
<br /><100
<br /><100 ---
<br />W-34.5-SVE2
<br />09/26/11
<br />---
<br />-
<br />-
<br />20,OOOd
<br />140,000
<br />--- <500
<br />7,100
<br />51,000
<br />4,900
<br />28,000 - --
<br />W-35-AS3
<br />09/20/11
<br />92,OOOd
<br />42,000,OOOk
<br />-- <1,000
<br />30,000
<br />100,000
<br />13,000
<br />69,000
<br />W-45-AS4
<br />08/24/11
<br />-
<br />64,OOOd
<br />190,000
<br />-- <500
<br />7,500
<br />54,000
<br />5,100
<br />25,000 -
<br />W-35-SVE5
<br />08/31/11
<br />-
<br />-
<br />-
<br />-
<br />1,200d
<br />3,200
<br />14
<br />790
<br />120
<br />110
<br />220
<br />W-35-AS6
<br />09/26/11
<br />---
<br />-
<br />9,500d
<br />130,000
<br /><500
<br />25,000
<br />44,000
<br />2,400
<br />15,000
<br />
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