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i <br /> TABLE 3 <br /> GROUNDWATER ANALYTICAL SUMMARY <br /> ARCO Service Station No 6100 <br /> 25775 Patterson Pass Road <br /> Tracy, California <br /> Ethyl- Total Nitrate <br /> Date TPHG Benzene Toluene benzene Xylenes MTBE TBA TAME DIPE ETBE Ethanol as NO3 <br /> Sample ID Collected (µg/L) WL) {µglL} (µg/L) (µg/L} (µg/L) (µg/L) (µ ) (µg/L) (µg/L) (µg/L) (mg/L) <br /> VW-6 2/8/2001 12,100 4,440 <100 <100 715 160 <200 <2 00 <2 00 <2 00 NA <10 <br /> 11/6/2001 24,000 12,000 <100 <100 <100 230 <20,000 <200 <200 <200 NA NA <br /> 3/26/2002 <10,000[2] 5,100 <100 <100 <100 270 <50[l] <5 0[1] <5 0[1] <5 0[1] NA NA <br /> 6/21/2002 <20,000 7,000 <200 <200 <200 330 170 <5 0 <5 0 <5 0 NA NA <br /> 9/18/2002 9,800 5,500 28 <25 40 300 270 <25 <25 <25 NA NA <br /> 12/23/2002 20,000 8,600 <50 <50 <50 310 <100 <10 <10 <10 NA NA <br /> 3/24/2003 <50,000 5,100 <500 <500 <500 2,800 <20,000 <500 <500 <500 <100,000 NA <br /> Domestic Well 2/7/2001 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00 <200 <2 00 <2 00 <2 00 NA 16 <br /> 9/5/2001 <50 <0 50 <0 50 <0 50 <0 50 <2 0 <200 <2 0 <2 0 <2 0 NA 15 <br /> 11/12/2001 <50 <0 50 <0 50 <0 50 <0 50 <1 0 <100 <10 <10 <1 0 NA 17 <br /> 3/26/2002 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 NA 17 <br /> 6/21/2002 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 NA NA <br /> 9/18/2002 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 NA NA <br /> 12/23/2002 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 NA NA <br /> 3/24/2003 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <20 <0 50 <0 50 <0 50 <100 NA <br /> ug/L=micrograms per liter <br /> mg/L=milligrams per liter <br /> NA=not analyzed <br /> [1] =The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limits <br /> [2] =Hydrocarbon pattern is present in the requested fuel quantitation range,but does not resemble the pattern of the requested fuel <br /> Arco-61 OOQuarterly_Data Page 2 of 2 STRATUS <br />