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TABLE 2 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No. 548 <br /> 1612 Hammer Lane, Stockton,California <br /> Well TBA MtBE DIPE ETRE TAME 1,2-DCA Ethanol <br /> Number Date pg/L pg/L pg/L -pWL pg/L pg/L pg/L <br /> VW-1 12/13/2001 22 87 <0.50 <0.50 <0.50 4.5 NA <br /> 3/12/2002 <5.0 0.68 <0.50 <0.50 <0.50 2.7 NA <br /> 9/9/2002 16 60 <0.50 <0.50 <0.50 2.2 NA <br /> 12/4/2002 60 97 <0.50 <0.50 <0.50 5.8 NA <br /> 3/3/2003 <40 30 <1.0 <1.0 <1.0 2.6 <200(a) <br /> 6/3/2003 <20 22 <7.0 <1.0 <1.0 1.6 <100 <br /> 9/18/2003 <100 120 <5.0 <5.0 <5,0 <2.5 <500 <br /> VW-2 12/13/2001 32 1.5 <0.50 <0.50 <0.50 28 NA <br /> 3/12/2002 <5.0 <0.50 <0.50 <0.50 <0.50 0.80 NA <br /> 9/9/2002 17 4.4 <0.50 <0.50 <0.50 12 NA <br /> 12/4/2002 100 5.4 <0.50 <0.50 <0.50 50 NA <br /> 3/3/2003 <40 <1.0 <1.0 <1.0 <1.0 23 <200(a) <br /> 6/3/2003 120 <0.50 <1.0 <1.0 <1.0 14 <100 <br /> 9/18/2003 <200 <5.0 <10 <10 <10 30 <1,000 <br /> VW-3 12/13/2001 59 16 <0.50 <0.50 <0.50 8.2 NA <br /> 3/12/2002 <5.0 0.72 <0.50 <0.50 <0.50 2.5 NA <br /> 9/9/2002 6.3 1.6 <0.50 <0.50 <0.50 4.4 NA <br /> 12/4/2002 <20 4.6 <0.50 <0.50 <0.50 21 NA <br /> 3/3/2003 39 3.6 <0.50 <0.50 <0.50 4.3 <100(a) <br /> 6/3/2003 22 2.7 <1.0 <1.0 <1.0 2.1 <100 <br /> 9/18/2003 <200 <5.0 <10 <10 <10 9.6 <1,000 <br /> VW-4 12/13/2001 <5.0 100 <0.50 <0.50 <0.50 12 NA <br /> 3/12/2002 <5.0 32 <0.50 <0.50 <0.50 5.3 NA <br /> 9/9/2002 <5 110 <0.50 <0.50 <0.50 5.9 NA <br /> 12/4/2002 <20 39 <0.50 <0.50 <0.50 2.8 NA <br /> 3/3/2003 <20 0.88 <0.50 <0.50 <0.50 <0.5 <100(a) <br /> 6/3/2003 <20 0.95 <1.0 <1.0 <1.0 <0.50 <100 <br /> 9/18/2003 <20 50 0.0 <1.0 <1.0 2.9 <100 <br /> VW-5S 3/12/2002 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA <br /> 9/9/2002 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NA <br /> 12/4/2002 <20 <0.5 <0.5 <0.5 <0.5 <0.5 NA <br /> 3/3/2003 <20 <0.5 <0.5 <0.5 <0.5 <0.5 <100(a) <br /> 6/3/2003 <20 <0.50 <1.0 <1.0 <1.0 <0.50 <100 <br /> 9/18/2003 Not Sampled <br /> K.\WprocessW5 BP ARC01005481Quartedo QTR 0310548 QMR 3003 <br /> Page 3 of 4 <br />