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TABLE 4 GRAB GROUNDWATER SAMPLE ANALYTICAL RESULTS, <br /> FORMER EXXON RS 7-0137, 1605 SOUTH EL DORADO STREET, STOCKTON,CALIFORNIA <br /> Ethyl- Total TPH as Other <br /> Benzene Toluene benzene Xylenes gasoline MTBE Oxygenates EDB/1,2-DCA <br /> Sample I D Date (fig/L) (4g/L) (µg/L) (µglL) (µg/L) (gg/L) (pg/L) (µg/L) <br /> iS133W 08/26/99 <0 5 <0 5 <0 5 <0 5 <50 4 89a ND <0 51<0 5 <br /> S134W 08/26/99 <0 5 0 665 <0 5 <0 5 <50 10 6a ND <0 51<0 5 <br /> S135W 08/26/99 <0 5 0 702 <0 5 <0 5 <50 <0 5 ND <0 5/<0 5 <br /> ' S136W 08/27/99 <0 5 <0 5 <0 5 <0 5 <50 <0 5 ND <0 51<0 5 <br /> SB7W 08/27/99 <2 5 <2 5 <2 5 558 3,930 19 6a ND <12 5/<12 5 <br /> a=MTBE by EPA Method 8260B <br /> Other oxygenates=Tert-amyl methyl ether, tert-butyl alcohol,d>-isopropyl ether, ethanol, ethyl tent-butyl ether, <br /> by EPA Method 8260B,methanol by EPA Method 8015 <br /> TPH=Total Petroleum Hydrocarbons <br /> MTBE=Methyl tertiary butyl ether <br /> ND =Not detected <br /> EDB= 1,2-dibromoethane <br /> 1,2-DCA= 1,2-dichloroethane <br /> pg/L=Micrograms per liter <br /> I\Proteus\70137\1"2ster�wp\closuleI 1001,ra6,w rls Page I of 1 <br />