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• Table 3 Historical Groundwater AnalytiZ'TData,T&T Trucking,Lodi,Caltfortua <br /> All concentrations to /L <br /> Sample Depth, EPA Method 8260B <br /> identificaton Date feet Benzene Toluene Eth ]benzene xylenes TPH-G MTBE RIPE ETRE TAME Tert-Butanol Other Analytes <br /> 8/20/2001 <0 50 <0 50 <0 50 <0 50 68 310 <br /> 10/31/2001 <20 <20 <20 <20 <200 560 <br /> 3/22/2002 <0 50 <0 50 <0 50 <0 50 190 340 <br /> 6/25/2002 <10 <10 <10 <10 <100 410 <br /> 8/27/2002 <10 <10 <10 <10 <100 200 <br /> 11/7/2002 <0 50 <0 50 <0 50 <0 50 <50 380 <br /> 2/10/2003 <0 50 <0 50 <050 <0 50 51 500 -- - - -- <br /> 5/15/2003 <15 <15 <15 <15 <200 760 28 <15 <15 77 <br /> 8/11/2003 <10 <10 <10 <10 <100 480 16 <10 <10 <10 <br /> 12/8/2003 <0 50 <0 50 <050 <0 50 <50 400 14 <0 50 <0 50 9 9 J <br /> 6/17/2004 <050 <0 50 <0 50 <0 50 <50 570 18 <0 50 <0 50 7 5 J <br /> 9/14/2004 <10 <10 <10 <10 <100 480 14 <10 <10 <10 <br /> 12/9/2004 <10 <10 <10 <10 <100 400 12 <10 <10 <10 <br /> 3/10/2005 <0 50 <0 50 <050 <050 <50 280 059 <0 50 <0 50 38 <br /> 6/2/2005 <050 <0 50 <0 50 <0 50 <50 740 14 <0 50 <050 12J <br /> Supply Well 11/7/2002 <0 50 <0 50 <0 50 <0 50 <50 <0 50 -- -- -- <br /> 2/10/2003 <br /> -2/10/2003 <0 50 <0 50 <0 50 <0 50 <50 <0 50 - -- -- - <br /> 5/15/2003 <0 50 <0 50 <0 50 <0 50 <50 <050 <0 50 <050 <0 50 <50 <br /> 8/11/2003 <0 50 <0 50 <0 50 <050 <50 <0 50 <0 50 <050 <050 <50 <br /> 12/8/2003 <0 50 <050 <0 50 <0 50 <50 <0 50 <0 50 <050 <0 50 <50 <br /> 6/17/2004 <0 50 <0 SO <0 50 <0 50 <50 <050 <050 <0 50 <050 <50 <br /> 9/14/2004 <050 <0 50 <0 50 <0 50 <50 <0 50 <0 50 <050 <0 50 <50 <br /> 12/9/2004 <0 50 <0 50 <050 <0 50 <50 <050 <0 50 <050 <0 50 <50 <br /> 3/10/2005 <0 50 <0 50 <0 50 <0 50 <50 <050 <0 50 <050 <0 50 <50 <br /> 6/2/2005 <0 50 <050 <050 <0 50 <50 <050 <0 50 <0 50 <0 50 <50 <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(46µg/L)was qualified by the lab as"elevated"as a result of possible interference <br /> J flag Biased Slightly high A fraction of MtBE(typically less than 1%)converts to Tert Butanol during the analysts of water samples Kiff Analytical considers <br /> this conversion effect to be mathematically significant in samples that contain MtBE/Tert Butanol in ratios of over 201 <br /> I <br /> P1I'rolcrts\127000\1279601Reporrclt3 As <br />