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�• womm 20mou tttlEW U11111111■V am M <br /> TABLE 4 <br /> ANALYTICAL RESULTS -GROUNDWATER MONITORING WELLS <br /> Sart Joaquin County Agricultural Commisstoner's Office <br /> 503 East 10th Street,Tracy, California <br /> OXYGENATES <br /> DATE ETHYL- <br /> WELL ID SAMPLED TPH-D TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPS I ETBE TAME TBA DO <br /> MW-1 11/05/98 ND<50 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 2 1 <br /> Li <br /> MW-2 11/05/98 140 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<O 5 ND<0 5 Nis<0 5 ND<0 5 ND<5 1 5 <br /> MW-3 19/05198 ND<50 ND<50 11 ND<0 5 ND<0 5 ND<0 5 ND<0 5 LNDO 5 ND<0 5 ND<0 5 ND<0 5 ND<5 L4 <br /> NOTES All results except DO are reported in micrograms/liter which translates to parts per billion(ppb) <br /> Total Petroleum Hydrocarbons as Diesel(TPN-D)and TPH-as-Gasoline(TPH-G)analyses by Modified EPA Method 8015 <br /> Benzene toluene,ethylbenzene and xylenes analysts by Modified EPA Method 8020 <br /> Oxygenates Methyl-t-butyl ether(MTBE), Diisopropyl ether(DIPE),Ethyl-t-butyl ether(ETBE),Tert-amyl methyl ether(TAME)and Tert-Butanol(TBA)by EPA 8260 <br /> Dissolved Oxygen(DO)measured in parts per million(ppm)using the azide modification of the Winkler Method(field titration kit) <br /> ND<50=Not Detected at reporting limit of 50 ppb <br /> I <br /> I <br />