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TABLE 3 <br /> GROUNDWATER ANALYTICAL SUMMARY <br /> ARCO Service Station No, 6100 <br /> 25775 Patterson Pass Road <br /> Tracy, California <br /> Ethyl- Total 1,2- Nitrate <br /> Sample Date TPHG Benzene Toluene benzene Xylenes MTBE TBA TAME DIPE ETBE Ethanol DCA EDB as NO3 QA/QC <br /> ID Collected (µg/L) 4L9/L) (Rg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L} (Rg/L) (Rg/L) (mg/L) Review <br /> DW 02/07/01 <50.0 <0.500 <0.500 <0.500 <0.500 <2.00 <200 <2.00 <2.00 <2.00 NA NA NA 16 <br /> 09/05/01 <50 <0.50 <0.50 <0.50 <0.50 <2.0 <200 <2.0 <2.0 <2.0 NA NA NA 15 <br /> 11/12/01 <50 <0.50 <0.50 <0.50 <0.50 <1.0 <100 <1.0 <1.0 <1.0 NA NA NA 17 <br /> 03/26/02 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <0.50 NA NA NA 17 <br /> 06/21/02 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <0.50 NA NA NA NA <br /> 09/18/02 <50 <0.50 <0.50 <0.50 <050 <0.50 <5.0 <0.50 <0.50 <0.50 NA NA NA NA <br /> 12/23/02 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <0.50 NA NA NA NA <br /> 03/24/03 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <20 <0.50 <0.50 <0.50 <100 NA NA NA <br /> 06/16/03 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <20 <1.0 <1.0 <1.0 <100 NA NA NA A <br /> 09/I9/03 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <20 <1.0 <1.0 <1.0 <100 <0.50 <0.50 NA A <br /> TPHG=Total petroleum hydrocarbons as gasoline ug/L=micrograms per liter QA/QC Review: <br /> MTBE=Methyl tertiary butyl ether mg/L-milligrams per liter A-Data accepted without qualification <br /> TBA=Tertiary butyl alcohol NA=not analyzed J=Data accepted with qualification <br /> TAME=Tertiary ainyl methyl ether DW=Domestic Well R=Data rejected <br /> RIPE=Di-isopropyl ether <br /> ETBE-Ethyl tertiary butyl ether <br /> 1,2-DCA= 1,2-Dichloroethane <br /> EDB= 1,2-Dibromoethane <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 /> [3]=Discrete peak @ C-6. <br /> [4]=Discrete peak a C5-C7. <br /> [5]=Result may be biased low, Matrix spike and matrix spike duplicate recoveries were below control limits,and the corresponding RPD was outside of control limits. <br /> Arco_6' uarterly_Data Pa' of 3 -OPATU5 <br />