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Tab1ea - <br /> Groundwater Analytical ResulfFlOxygenate Compounds <br /> Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL ID DATE METHANOL ETHANOL TBA MTBE DIPE ETBE TAME 1,2-DCA EDB <br /> (PPM) (Ppb) (ppb) (PPb) Wb) (Ppb) (Ppb) (Ppb) (Ppb) <br /> VW-2 12/08/97 WELL CONNECTED TO VES -- <br /> 03/05/98 DRY -- -- - - -- -- <br /> 05/27/98 DRY - - - - -- <br /> 07/21/98 DRY -- <br /> 10/14/98 DRY - -- --01/25-26/99 DRY -- -- -- -- -- <br /> 04/19/-20199 -- <500 <100 49 <2 0 <2 0 <2 0 -- -- <br /> 10/25-26/99 DRY -- -- <br /> 01127-28100 DRY - -- -- -- -- -- -- -- <br /> 06/26-27100 -- - <500 486 <100 <10 0 <100 - -- <br /> 09/22-23100 DRY -- -- -- -- -- - <br /> 12/26-27100 DRY - - -- - - - -- <br /> 03/07-08101 DRY -- - -` -- -- - <br /> 06/26-27101 DRY -- -- -- <br /> VW-3 12/08/97 <1 0 <500 <100 <2 0 <2 0 <2 0 <2 0 -- -- <br /> 03/05/98 -- <1,200 <250 300 <5 0 <5 0 <5 0 -- -- <br /> 05/27/98 -- <500 <100 <20 <2 0 <2 0 <2 0 -- <br /> 07/21/98 - <500 <100 <2 0 <2 0 <2 0 <2 0 -- -- <br /> 10/14/98 - <500 <100 <2 0 <2 0 <2 0 <2 0 --01/25-26/99 -- <500 <100 1,300 <2 0 <2 0 <2 0 -- -- <br /> 04119/-20/99 - <5,000 <1,000 890 <20 <20 <20 -- -- <br /> 07/15-16/99 - -- <5,000 4,900 <100 <100 <100 -- -- <br /> 10/25-26/99 -- - <1,000 850 <20 <20 <20 -- -- <br /> 01/27-28100 -- - <2,000 2,500 <40 <40 <40 -- -- <br /> 06/26-27/00 -- -- <250 384 <5 00 <5 00 <5 00 -- <br /> 09/22-23/00 <100 <5,000 <500 2,400 <20 <20 <20 <20 <20 <br /> 12/26-27/00 -- <1,000 <100 104 <2 00 <2 00 <2 00 -- -- <br /> 03/07-08/01 -- <1,000 <100 333 <2 00 <2 00 <2 00 <2 00 <2 00 <br /> 06126-27101 -- <1,000 <100 41 <20 <2 0 <2 0 <20 <2 0 <br /> 6981 xls/#180138 29 As of 06/27/01 <br />