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TABLE 1B
<br />ADDITIONAL CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA
<br />Former Mobil Service Station 99CAS
<br />75 E. Alpine Avenue
<br />Stockton, California
<br />(Page 5 of 6)
<br />Well
<br />Sampling
<br />DIPE
<br />ETBE
<br />TAME
<br />TBA
<br />1,2 -DCA
<br />EDB
<br />Ethanol
<br />Methanol
<br />ID
<br />Date
<br />(Ng/L)
<br />(lag/L)
<br />(ug/L)
<br />(ug/L)
<br />(ug/L)
<br />(ug/L)
<br />(ug/L)
<br />(ug/L)
<br />DW4
<br />04/07/10
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />---
<br />---
<br /><50
<br /><100
<br />DW4
<br />08/09/10
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />--•
<br />---
<br /><50
<br /><100
<br />DW4
<br />10/05/10
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br />...
<br />---
<br /><50
<br /><100
<br />DW4
<br />02/09/11
<br /><0.50
<br /><0.50
<br /><0.50
<br /><10
<br /><0.50
<br /><0.50
<br /><50
<br /><100
<br />DW4
<br />05/18/11
<br /><0.50
<br /><0.50
<br /><0.50
<br /><5.0
<br /><0.50
<br /><0.50
<br />---
<br />---
<br />EX1
<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 />86j
<br />EX1
<br />10/27/09
<br /><1,200
<br /><1,200
<br /><1,200
<br /><25,000
<br /><1,200
<br /><1,200
<br /><120,000
<br /><100
<br />EX1
<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 />EX1
<br />04/07/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />---
<br /><100,000
<br /><100
<br />EX1
<br />08/10/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />---
<br /><100,000
<br />73j
<br />EX1
<br />10/06/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />---
<br />---
<br /><100,000
<br /><100
<br />EX1
<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 />EX1
<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 />EX2
<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 />180
<br />EX2
<br />10/27/09
<br /><1,200
<br /><1,200
<br /><1,200
<br /><25,000
<br /><1,200
<br /><1,200
<br /><120,000
<br /><100
<br />EX2
<br />01/25/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br /><1,000
<br /><1,000
<br /><100,000
<br /><100
<br />EX2
<br />04/07/10
<br /><500
<br /><500
<br /><500
<br /><10,000
<br />---
<br />---
<br /><50,000
<br /><100
<br />EX2
<br />08/10/10
<br /><1,000
<br /><1,000
<br /><1,000
<br /><20,000
<br />---
<br />---
<br /><100,000
<br /><100
<br />EX2
<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 />EX2
<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 />
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