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TABLE 1 B <br />ADDITIONAL CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA <br />Former Mobil Service Station 99CAS <br />75 East Alpine Avenue <br />Stockton, California <br />(Page 8 of 11) <br />Well <br />ID <br />Sampling <br />Date <br /><25 <br />DIPE <br />(Ng/L) <br />ETBE <br />(Ng/L) <br />TAME <br />(Ng/L) <br />TBA <br />(ug/L) <br />1,2 -DCA <br />(ug/L) <br />EDB Ethanol Methanol <br />(Ng/L) (ug/L) (Ng/L) <br />DW2 <br />10/24/12 <br />n <br />- <br />--- <br /><5.0 <br />- <br />-- <br />--- -- - <br />DW2 <br />01/31/13 <br />DW3 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 - - <br />DW2 <br />05/03/13 <br />n <br />--- <br />-- <br /><5.0 <br /><5.0 <br />--- <br /><100 <br />DW2 <br />08/21/13 <br /><500 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 <br />DW2 <br />12/18/13 <br />n <br />--- <br />--- <br />.-• <br />-- <br />--- <br />--- <br />DW2 <br />03/19/14 <br />-•- <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 --- --- <br />DW2 <br />06/12/14 <br />m <br />-- <br />--- <br />--- <br />--- <br />--- <br />--- <br />DW2 <br />08/01/14 <br />m <br />... <br />--- <br />...- <br /><1,000 <br /><100 <br />DW3 <br />DW2 <br />10/28/14 <br />m <br />... <br />--- <br />--• <br />-- <br />--- <br />--- <br />DW2 <br />02/05/15 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 - <br />DW3 <br />02/23/09 <br /><25 <br /><25 <br /><25 <br /><500 <br /><25 <br /><25 <br /><2,500 <br />-- <br />DW3 <br />04/29/09 <br /><5.0 <br /><5.0 <br /><5.0 <br /><100 <br /><5.0 <br /><5.0 <br /><500 <br /><100 <br />DW3 <br />07/14/09 <br /><5.0 <br /><5.0 <br /><5.0 <br /><100 <br /><5.0 <br /><5.0 <br /><500 <br />180 <br />DW3 <br />10/28/09 <br /><5.0 <br /><5.0 <br /><5.0 <br /><100 <br /><5.0 <br /><5.0 <br /><500 <br /><100 <br />DW3 <br />01/25/10 <br /><10 <br /><10 <br /><10 <br /><200 <br /><10 <br /><10 <br /><1,000 <br /><100 <br />DW3 <br />04/07/10 <br /><10 <br /><10 <br /><10 <br /><200 <br />-•- <br />--- <br /><1,000 <br /><100 <br />DW3 <br />08/10/10 <br /><10 <br /><10 <br /><10 <br /><200 <br />--- <br /><1,000 <br /><100 <br />DW3 <br />10/06/10 <br /><10 <br /><10 <br /><10 <br /><200 <br /><1,000 <br /><100 <br />DW3 <br />02/09/11 <br /><10 <br /><10 <br /><10 <br /><200 <br /><10 <br /><10 <br /><1,000 <br /><100 <br />DW3 <br />05/19/11 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br />1.4 <br /><0.50 <br />DW3 <br />09/22/11 1 <br />-- <br />--- <br />--- <br />--- <br />--- <br />--- <br />DW3 <br />12/01/11 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br />1.0 <br />0.82 <br />DW3 <br />03/15/12 <br /><50 <br /><50 <br /><50 <br /><500 <br /><50 <br /><50 <br />DW3 <br />05/03/12 <br /><50 <br /><50 <br /><50 <br /><500 <br /><50 <br /><50 <br />DW3 <br />08/24/12 <br /><100 <br /><100 <br /><100 <br /><1,000 <br /><100 <br /><100 <br />DW3 <br />10/24/12 <br /><1.0 <br /><1.0 <br /><1.0 <br />13 <br /><1.0 <br /><1.0 <br />... <br />DW3 <br />01/31/13 <br /><40 <br /><40 <br /><40 <br /><400 <br /><40 <br /><40 <br />DW3 <br />05/03/13 <br /><40 <br /><40 <br /><40 <br /><400 <br /><40 <br /><40 <br />DW3 <br />08/21/13 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br />1.2 <br /><0.50 <br />DW3 <br />12/18/13 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 <br />DW3 <br />03/20/14 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 <br />- <br />DW3 <br />06/12/14 m <br />--- <br />--- <br />--- <br />-- <br />DW3 <br />08/01/14 m <br />- <br />--- <br />--- <br />- <br />DW3 <br />DW3 <br />10/28/14 m <br />--- <br />--- <br />--- <br />DW3 <br />02/0515 p <br />--- <br />--- <br />--- <br />--- <br />--- <br />-- <br />--- <br />--- <br />DW3 <br />02/25/15 <br /><0.50 <br /><0.50 <br /><0.50 <br /><5.0 <br /><0.50 <br /><0.50 <br />--- <br />--- <br />DW4 <br />07/14/09 <br /><0.50 <br /><0.50 <br /><0.50 <br /><10 <br />1.1 <br /><0.50 <br /><50 <br />260 <br />DW4 <br />10/27/09 <br /><0.50 <br /><0.50 <br /><0.50 <br /><10 <br />0-81 <br /><0.50 <br /><50 <br /><100 <br />DW4 <br />01/25/10 <br /><0.50 <br /><0.50 <br /><0.50 <br /><10 <br />0.37 <br /><0.50 <br /><50 <br /><100 <br />DW4 <br />04/07/10 <br /><0.50 <br /><0.50 <br /><0.50 <br /><10 <br />••- <br /><50 <br /><100 <br />DW4 <br />08/09/10 <br /><0.50 <br /><0.50 <br /><0.50 <br /><10 <br /><50 <br /><100 <br />