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Table 3 Historical Groundwater Analytical Data,T&T Trucking, Lodi,California <br /> Sample Date Depth, All concentrations inµg/L <br /> identificaton feet Benzene Toluene Ethylbenzene Xylenes TPH-G MTBE Other Analytes <br /> MW-1 12/7/95 70-90 11 8 2 <1 5 32 700 -- <br /> 7/29/97 240 29 10 31 5,700 <5 0 -- <br /> 8/14/98 2,000 <25 <25 <25 5,500 .44- <br /> 4/27/99 220 29 <2 0 16 4,200 1,300 Isopropyl benzene 2 6 <br /> MW-2 8/14/98 60-80 83 16 <10 <1 0 1,100 <5 0 -- <br /> 4/27/99 3 76 08 54 <50 10 <br /> MW-3 8/14/98 60-80 87 86 <2 5 17 2,400 <5 0 -- <br /> 4/27/99 1,200 10 <0 5 150 8,500 <5 0 Isopropyl benzene 4 7 <br /> 4/27/99 -- -- -- -- -- -- 1,3,5-Trimethylbenzene 2 5 <br /> 4/27/99 -- -- -- -- -- -- 1,2,4-Tritnethylbenzene 6 3 <br /> 4/27/99 -- -- -- -- -- -- sec-butylbenzene 12 <br /> 4/27/99 -- -- -- -- -- -- n-butylbenzene 15 <br /> MW-4 8/14/98 60-80 93 <1 0 <10 <1 0 1,500 <5 0 -- <br /> 4/27/99 24 22 <0 5 1 7 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 /> TPH-G=Total Petroleum Hydrocarbons as Gasoline • <br /> MTBE=Methyl-t-butyl ether <br /> Notes 1 BTEX and TPH-G analyzed using EPA Method 8020/602 <br /> 2 MTBE analyzed using EPA Method 8020/602 and 8260B <br /> 3 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 gg/L)was qualified by the lab as"elevated"as a result of possible Interference <br /> BCSACM16=\16271\TABLES\T3 XIS <br />