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TABLE 1 B
<br />ADDITIONAL CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 E. Alpine Avenue
<br />Stockton, California
<br />(Page 2 of 6)
<br />Well Sampling DIPE ETBE TAME TBA 1,2 -DCA EDB Ethanol Methanol
<br />ID Date (ug/L) (Ng/L) (pg/L) (pg/L) (Ng/L) (ug/L) (Ng/L) (ug/L)
<br />MW3
<br />05/29/08
<br /><10.0
<br /><10.0
<br /><10.0
<br /><10.0
<br />2.72
<br /><10.0
<br /><100
<br /><5,000
<br />MW3
<br />08/27/08
<br /><20
<br /><20
<br /><20
<br /><20
<br />5.2
<br /><20
<br /><100
<br /><100
<br />MW3
<br />11/13/08
<br /><20
<br /><20
<br /><20
<br /><20
<br />6.7
<br /><20
<br /><100
<br /><100
<br />MW3
<br />01/28/09
<br /><20
<br /><20
<br /><20
<br /><20
<br />5.9
<br /><20
<br /><100
<br /><100
<br />MW3
<br />04/29/09
<br /><20
<br /><20
<br /><20
<br /><20
<br />5.1
<br /><20
<br /><100
<br /><100
<br />MW3
<br />07/14/09
<br /><200
<br /><200
<br /><200
<br /><200
<br />5.2j
<br /><200
<br /><1,000
<br /><100
<br />MW3
<br />10/28/09
<br /><20
<br /><20
<br /><20
<br /><20
<br />5.2
<br /><1.0
<br /><100
<br /><100
<br />MW3
<br />01/25/10
<br /><10
<br /><10
<br /><10
<br /><10
<br />2.6
<br /><0.50
<br /><50
<br /><100
<br />MW3
<br />04/07/10
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />---
<br />---
<br /><50
<br /><100
<br />MW3
<br />08/10/10
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />--
<br /><50
<br /><100
<br />MW3
<br />10/06/10
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />---
<br />-•-
<br /><50
<br /><100
<br />MW3
<br />02/09/11
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />1.7
<br /><0.50
<br /><50
<br /><100
<br />MW3
<br />05/19/11
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br />3.4
<br /><0.50
<br />---
<br />MW4
<br />03/26/07
<br /><20,000
<br /><20.000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><100,000
<br /><5,000
<br />MW4
<br />06/28/07
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><100,000
<br /><5,000
<br />MW4
<br />09/12/07
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><100,000
<br /><1,000
<br />MW4
<br />11/26/07
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><20,000
<br /><100,000
<br /><1,000
<br />MW4
<br />02/28/08
<br /><0.500
<br /><0.500
<br /><0.500
<br />11.6
<br />113
<br />177
<br /><100
<br /><5,000
<br />MW4
<br />05/29/08
<br /><10.0j
<br /><10.Oj
<br /><10.Oj
<br /><200j,p
<br /><10.Oj
<br />172
<br /><2,OOOj
<br /><5,000
<br />MW4
<br />08/27/08
<br /><25
<br /><25
<br /><25
<br /><1,000
<br />76
<br />130
<br /><5,000
<br /><1,000
<br />MW4
<br />11/13/08
<br /><50
<br /><50
<br /><50
<br /><2,000
<br />67
<br />89
<br /><10,000
<br /><1,000
<br />MW4
<br />01/28/09
<br /><250
<br /><250
<br /><250
<br /><5,000
<br /><250
<br />64j
<br /><25,000
<br /><100
<br />MW4
<br />04/29/09
<br /><1,200
<br /><1,200
<br /><1,200
<br /><25,000
<br /><1,200
<br /><1,200
<br /><120,000
<br /><100
<br />MW4
<br />07/14/09
<br /><1,200
<br /><1,200
<br /><1,200
<br /><25,000
<br /><1,200
<br /><1,200
<br /><120,000
<br /><100
<br />MW4
<br />10/28/09
<br /><1,200
<br /><1,200
<br /><1,200
<br /><25,000
<br /><1,200
<br /><1,200
<br /><120,000
<br /><100
<br />MW4
<br />01/25/10
<br /><1,200
<br /><1,200
<br /><1,200
<br /><25,000
<br /><1,200
<br /><1,200
<br /><120,000
<br /><100
<br />MW4
<br />04/07/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />---
<br />---
<br /><100,000
<br /><100
<br />MW4
<br />08/09/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />--
<br /><100,000
<br /><100
<br />MW4
<br />10/05/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />---
<br />---
<br /><100,000
<br /><100
<br />MW4
<br />02/09/11
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br /><1,000
<br /><1,000
<br /><100,000
<br /><100
<br />MW4
<br />05/19/11
<br /><1,000
<br /><1,000
<br /><1,000
<br /><10,000
<br /><1,000
<br /><1,000
<br />---
<br />---
<br />MW5
<br />03/26/07
<br /><10,000
<br /><10,000
<br /><10,000
<br /><10,000
<br /><10,000
<br /><10,000
<br /><50,000
<br /><1,000
<br />MW5
<br />06/28/07
<br /><2,000
<br /><2,000
<br /><2,000
<br /><2,000
<br /><2,000
<br /><2,000
<br /><10,000
<br /><1,000
<br />MW5
<br />09/12/07
<br /><1,000
<br /><1,000
<br /><1,000
<br /><1,000
<br /><1,000
<br /><1,000
<br /><5,000
<br /><1,000
<br />MW5
<br />11/26/07
<br /><1,000
<br /><1,000
<br /><1,000
<br /><1,000
<br /><1,000
<br /><1,000
<br /><5,000
<br /><1,000
<br />MW5
<br />02/28/08
<br /><0.500
<br /><0.500
<br /><0.500
<br /><10.0
<br /><0.500
<br /><0.500
<br /><100
<br /><5,000
<br />MW5
<br />05/29/08
<br /><0.500
<br /><0.500
<br /><0.500
<br /><10.0
<br /><0.500
<br /><0.500
<br /><100
<br /><5,000
<br />MW5
<br />08/27/08
<br /><1.0
<br /><1.0
<br /><1.0
<br /><40
<br />1.4
<br /><1.0
<br /><200
<br /><100
<br />MW5
<br />11/13/08
<br /><0.50
<br /><0.50
<br /><0.50
<br /><20
<br />1.2
<br /><0.50
<br /><100
<br /><500
<br />MW5
<br />01/28/09
<br /><5.0
<br /><5.0
<br /><5.0
<br /><100
<br /><5.0
<br /><5.0
<br /><500
<br /><100
<br />MW5
<br />04/29/09
<br /><25
<br /><25
<br /><25
<br /><500
<br /><25
<br /><25
<br /><2,500
<br /><100
<br />
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