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• Table 3Y. Historical Groundwater Anal txcaTData, T&T Trucking, Lodi, California <br /> All concentrations in µg/L <br /> sample Depth, EPA Method 8260E <br /> tdentificaton Date feet Benzene Toluene Eth lbenzene Xylenes TPH-G MTBE Other Analytes <br /> MWA 8/14/1998(a) 60-80 93 <10 <10 <10 1,500 <50 <br /> 4/27/99 24 22 <0 5 17 1,600 100 Isopropyl benzene 7 4 <br /> 4/27/99 -- -- -- -- -- -- n-Propylbenzene 0 97 <br /> 4/27/99 - -- -- sec-butylbenzene 2 0 <br /> 4/27/99 -- -- -- — -- -- n-butylbenzene 15 <br /> 1/26/00 37 <05 <05 <0 5 280 47 <br /> 4/20/00 0 7 <05 <05 <05 430 120 <br /> 7/21/00 2 1 <05 <0 5 <05 140 180 <br /> 10/31/00 12 <10 <10 <10 110 490 <br /> 1/19/01 2 6 <20 <20 <20 <200 1,200 <br /> 5/18/01 <20 <2 0 <2 0 <20 <200 960 <br /> 8/20/01 <0 50 <0 50 <0 50 <0 50 68 310 <br /> TPH-G = total petroleum hydrocarbons as gasoline <br /> MTBE = methyl-t-butyl ether <br /> Notes (a) BTEX and TPH-G analyzed using EPA Method 8020/602 MTBE analyzed using EPA Method 8020/602 and 8260B <br /> (b) The MTBE result shown is from EPA Method 8020/602 and not the result from EPA Method 8260B <br /> The EPA Method 8260B result for MTBE (46 pg/L) was qualified by the lab as "elevated"as a result of possible interference <br /> P\Projects\21000\2141AReportAd As <br />