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CAMB]SIA <br /> Table 1 Additional Groundwater Analytical Data,Shell-branded Service Station,2494 East Fremont Street,Stockton,California <br /> Sample Date MTBE DIPE ETBE TAME TBA Methanol Ethanol 1,2-DCA EDB <br /> ( ) (LO) ( ) ( 1) (AO) ( ) ( ) (all) Ot ) <br /> S-4 18-Feb-02 <0 50 53 <2 0 <2 0 <50 NA NA 83 <2 0 <br /> S-4 01-May-02 <0 50 69 <2 0 <2 0 <50 NA NA 140 <2 0 <br /> S-4 08-Aug-02 48 63 <2 0 <2 0 <50 NA NA I3 <2 0 <br /> S-4 28-Oct-02 057 60 <2 0 <2 0 <50 [1,000 <500 13 <2 0 <br /> S-4 14-May-03 <5 0 NA NA NA NA NA NA 89 NA <br /> S-4 14-Aug-03 <0 50 63 <2 0 <2 0 <5 0 <500 <50 11 <0 50 <br /> 5-4-83 06-Ian-03 <5 0 72 <2 0 <2 0 <50 <1,000 <500 74 <2 0 <br /> 5-4-83 l4-May-03 064 74 <2 0 <2 0 <50 <1 000 <500 100 <0 50 <br /> 5-4-83 14-Aug-03 060 16 <2 0 <2 0 <5 0 <500 <50 130 <0 50 <br /> Abbreviations and Notes <br /> NA=Not analyzed <br /> <x=Not detected at reporting limit x <br /> µgll=Micrograms per liter(parts per billion) <br /> *=Sample analyzed outside of EPA recommended hold time <br /> Ethanol,Tertiary butanol(TBA), di-isopropyl ether(DIPE),methyl tertiary butyl ether(MTBE), 1,2-Dibromoethane(EDB), 1 2-Dichloroethane(1,2-DCA), <br /> ethyl tertiary butyl ether(ETBE),and tertiary amyl methyl ether(TAME)by EPA Method 8260B <br /> Methanol bx EPA Method 8015(Modified)or 8260B <br /> 0797 Page 2 of 2 <br />