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� V <br /> Table 3. Historical Trucking,Groundwater Anal c'�Data,T&T Truclun , Lath, California <br /> All concentrations to /L <br /> Sample Depth, EPA Method 8260B <br /> identificaton Date feet Benzene Toluene Eth lbenzene Xylenes TPH-G MTBE Other Analytes <br /> 10/31/2000 320 <0 50 <0 50 44 1,400 33 <br /> 1/19/2001 390 <10 <10 18 1,900 <10 <br /> 5/18/2001 190 <0 50 <0 50 16 650 230 <br /> 8/20/2001 720 <0 50 <050 <0 50 240 9 <br /> 10/31/2001 900 <0 50 <0 50 13 360 17 <br /> 3/22/2002 410 <050 <050 <050 320 36 <br /> MW-4 8/14/1990a) <br /> 60-80 93 <1 0 <1 0 <1 0 1,500 <5 0 <br /> 4/27/1999 24 22 <0 5 17 1,600 100 Isopropyl benzene 7 4 <br /> 4/27/1999 -- -- -- -- -- -- n-Propylbenzene 0 97 <br /> 4/27/1999 -- -- -- -- - sec-butylbenzene 2 0 <br /> 4/27/1999 -- -- -- -- -- -- n-butylbenzene 15 <br /> 1/26/2000 37 <05 <05 <0 5 280 47 <br /> 4/20/2000 07 <05 <0 5 <05 430 120 <br /> 7/21/2000 21 <0 5 <0 5 <0 5 140 180 <br /> 10/31/2000 12 <10 <10 <10 110 490 <br /> 1/19/2001 26 <20 <20 <20 <200 1,200 <br /> 5/18/2001 <20 <20 <20 <2 0 <200 960 <br /> 8/20/2001 <0 50 <0 50 <0 50 <0 50 68 310 <br /> 10/31/2001 <2 0 <20 <20 <20 <200 560 <br /> 3/22/2002 <0 50 <0 50 <0 50 <0 50 190 340 <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 µg/L)was qualified by the lab as"elevated"as a result of possible interference <br /> P\Projccts\21000\21417\Reports\c3 xis <br />