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TABLE 2 <br /> ADDITIONAL GROUNDWATER DATA <br />' THRIFTY OIL STATION #172, STOCKTON, CA <br /> OXYGENATES ALCOHOLS <br />' Dt-isopropyl Ether Fthyl-Tent-ButylEther Tert-Amyl Methyl Ether 7 ort-Butyl Alcohol Ethyl Alcohol Methyl Alcohol <br /> DA7 E (DIPS) (ETRE) ('TAME) (TBA) (Ethanol) (Methanol) <br /> SAMPLED (ug/l,) (ug L) (ug/L.) (ug1L) (mg/L) (Ing/1,11 <br />' 08/18/00 <2 <2 <2 <50 <50 <50 <br /> 11/09/00 <br /> 02/15/01 <05 <07 <05 33 <20 <20 <br /> 05/17/01 - - <br /> 05/24/01 <05 <07 <05 8181 <20 <20 <br /> 08/16/01 <25 <35 <25 <500 <20 <20 <br /> 11/08101 <50 <70 <50 1 210 <20 <20 <br />' 02/21/02 <50 <70 <50 <1000 <20 <20 <br /> 05/22/02 <125 <175 <125 <2500 <20 <20 <br /> 08/14/02 <20 <12 <16 <1000 <20 <20 <br /> 11/20/02 <02 <012 <016 <10 <20 <20 <br />' 02/12/03 <0 29 <0 17 <0 28 <10 <20 <20 <br /> 05/21/03 <14 5 <85 <14 365 J <20 <20 <br /> 08/20/03 <14 5 <85 13 100 13 400 <20 <20 <br />' 11/26/03 <29 <1 7 <2 8 <100 <20 <20 <br />' NOTE DIPS ETBE TAME TBA Ethanol Methanol analyzed by EPA Methods 8260 8260B <br /> Begmnkng 8/18100 Lthanol and Methanol analyzed by D295 GC-HID <br />� 0 <br /> 1 <br /> • <br /> 172TA92 OXY Page 5 of 5 12/11/03 <br />