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1 <br /> TABLE 1.2 <br /> RESULTS OF GROUNDUATER SAMPLE ANALYSES FOR PETROLEUM � <br /> j <br /> HYDROCARBONS P1ND VOLATILE GASOLINE CONSTITUENTS <br /> FROM---MONITOR WELL MW1 <br /> r <br /> HP.:;DYMAN UNDERGROUND TANK ASSESSMENT, TRACY , CALIFORNIA l <br /> ( K/J/C 866156) J <br /> JANUARY 1987 1 <br /> CHEMICAL/PARAMETER CONCENTRATION <br /> ' f <br /> Temperature ( field) 20.0' C <br /> I <br /> . t <br /> pH (field) 7.0 <br /> Conductivity ( field) 2200 umbos <br /> Petroleum Hydrocarbonsa Gasoline = <0 . 2 mg/L <br /> Diesel = <0 . 25 mg/L <br /> Volatile Gasoilne Constituentsb Benzene = <1 ug/L <br /> Toluene = <1 ug/L <br /> Xylene = <1 ug/L <br /> Ethylbenzene = <1 ug/L <br /> a. Analysis for petroleum hydrocarbons by gas chror,-�atocraphy <br /> using a fume ionization detector (GC/FID) . <br /> b. inalysis =or the .rolatile gasoline constituents benzene , <br /> toluene, xylene and ethylbenzene using EPA method 6C2 . <br /> i <br />