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TABLE 1B
<br />ADDITIONAL CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 East Alpine Avenue
<br />Stockton, California
<br />(Page 3 of 11)
<br />Well Sampling DIPE ETBE TAME TBA 1,2 -DCA EDB Ethanol Methanol
<br />ID Date (ug/L) (N9/L) (N9/L) (u9/L) (u9/L) (u9/L) (ug/L) (ug/L)
<br />MW3
<br />02/09/11
<br /><20,000
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />1.7
<br /><0.50 <50 <100
<br />MW3
<br />05/19/11
<br />06/28/07
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br />3.4
<br /><0.50 -•- ---
<br />MW3
<br />09/22/11
<br />MW4
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br />2.1
<br /><0.50
<br />MW3
<br />12/01/11
<br /><1,000
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50
<br />MW3
<br />03/15/12
<br /><100,000
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br />0.60
<br /><0.50 -
<br />MW3
<br />05/03/12
<br />177
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50
<br />MW3
<br />08/24/12
<br /><10.Oj
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50 --
<br />MW3
<br />10/24/12
<br />n
<br />---
<br />---
<br />••-
<br />-•-
<br />---
<br />.--
<br />MW3
<br />01/31/13
<br /><50
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br />1.4
<br /><0.50
<br />MW3
<br />05/03/13
<br />n
<br />---
<br />-•-
<br />.-•
<br />.--
<br /><25,000
<br />- -
<br />MW3
<br />MW3
<br />08/21/13
<br /><1,200
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50 --- ---
<br />MW3
<br />12/18/13
<br />n
<br />--
<br />--
<br />---
<br />.--
<br />---
<br />- - -
<br />MW3
<br />MW3
<br />03/19/14
<br />MW4
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50 - --
<br />MW3
<br />06/12/14
<br />m
<br />••-
<br />---
<br />---
<br />---
<br />.--
<br />--
<br />MW3
<br />08/01/14
<br />m
<br /><100
<br />MW4
<br />-
<br />-
<br /><1,000
<br />- --- ---
<br />MW3
<br />10/28/14
<br />m
<br />---
<br />---
<br />-•-
<br />.--
<br />-
<br />---
<br />MW3
<br />02/05/15
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50 -
<br />MW3
<br />02/25/15
<br /><20,000
<br />---
<br />---
<br />---
<br />---
<br />---
<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.Oj
<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 /><100,000
<br /><100
<br />MW4
<br />08/09/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<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 />MW4
<br />09/22/11 I
<br />---
<br />---
<br />---
<br />--
<br />MW4
<br />11/30/11
<br /><1,000
<br /><1,000
<br /><1,000
<br /><10,000
<br /><1,000
<br /><1,000
<br />-
<br />MW4
<br />03/15/12
<br /><1,000
<br /><1,000
<br /><1,000
<br /><10,000
<br /><1,000
<br /><1,000
<br />MW4
<br />05/04/12
<br /><1,000
<br /><1,000
<br /><1,000
<br /><10,000
<br /><1,000
<br /><1,000
<br />---
<br />MW4
<br />08/24/12
<br /><1,000
<br /><1,000
<br /><1,000
<br /><10,000
<br /><1,000
<br /><1,000
<br />-
<br />MW4
<br />10/24/12
<br /><670
<br /><670
<br /><670
<br /><6,700
<br /><670
<br /><670
<br />-
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