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. � TABLE 2 <br /> HISTORICAL GROUNDWATER ANALYTICAL SUMMARY <br /> USA Gasoline Station 65 <br /> 2500 West Lodi Avenue <br /> Lodi, California <br /> Ethyl- Total <br /> Sample Date TPH-G MTBE TBA DIPE ETBE TAME Benzene Toluene benzene Xylenes <br /> ID Collected (mg/L) (µg/L.) (µg/L) (Rg/L.) (pg/L) (pg/L) (µg/l,) (pg/L) (Itg/L) (n/1-) <br /> S-1 3/30/99 14 16,000 N/A N/A N/A N/A 1,200 <10 240 1,200 <br /> 6/28/99 15 15,000 N/A N/A N/A N/A 12,00 <0.5 270 1,200 <br /> 12/19/99 7.6 10,000 1,300 N/A N/A <500 440 27 130 440 <br /> 5/17/00 6.1 6,500 5,000 NIA N/A 18 500 <4.0 91 140 <br /> 9/22/00 7.7 8,100 5,500 N/A N/A 22 490 210 99 357 <br /> 12/6/00 12 10,000 8,000 N/A N/A <501 42 <25' 26 237 <br /> 2/23/01 23 2,300 2,900 <5.0 <5.0 <5.0 <2.0 <0.5 3.2 154 <br /> 5122/01 0.85 780 840 <2.5z <2.52 <2.52 <1.32 <1.32 <1.32 2.9 <br /> S-2 3/30/99 2.3 2,900 NIA N/A N/A N/A 120 5.5 88 270 <br /> 6/28/99 8.9 10,000 N/A N/A N/A N/A 510 65 96 1,300 <br /> . 12/19/99 19 1,300 <50 N/A N/A <50 48 44 40 76 <br /> 5/17/00 3.1 2,800 400 N/A N/A 47 240 7.6 160 408 <br /> 9122/00 7.4 2,600 340 NIA N/A 45 130 270 270 1,300 <br /> 12/6/00 2.0 1,100 190 N/A N/A 24 38 8.6 57 150 <br /> 2/23/01 <0.05 88 <10 <1.0 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <br /> 5/22/01 0.062 47 20 <1.0 <1.0 <1.0 <0.5 <0.5 1.3 3.3 <br /> TPHG analyzed by USEPA Method 8015 <br /> BTEX analyzed by USEPA Method 8260B <br /> DIPE=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> MTBE=Methyl tertiary butyl ether <br /> TBA=Tertiary butyl alcohol <br /> TAME=Tertiary amyl methyl eth <br /> DIPE,ETBE,MTBE,TBA and TAME analyzed by USEPA Method 826013 <br /> TPHG=Total petroleum hydrocarbons as gasoline are analyzed as total petroleum hydrocarbons purgeable <br /> N/A=Not analyzed <br /> 1=Reporting limits were increased due to high concentrations of target analytes <br /> Z=Reporting limits were increased due to sample foaming <br /> USA 0065 Quarterly Data.xls Page 4 of 4 5TRATt15 <br />