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Canepa's Car Wash <br /> 248 East Park Street,Stockton,California <br /> First Quarter Groundwater Monitoring Report,January,2005 <br /> Page 4 of 5 <br /> Table 2—Groundwater Laboratory Analytical Results (January 2005) <br /> B T E X TPH-G MTBE <br /> Analytical Method—> 8260B 8260B 8260B 8260B 8015E 8260E <br /> Reporting Units—+ µg11. µg/L µg/L µg/L mg/L µg/L <br /> Sample I D <br /> 2038-MW1-01/14/05 <0 5 <0 5 <0 5 <1 0 <0 05 1 1 <br /> 2038-MW2-01/14/05 14 16 31 58 43 <l0(d) <br /> 2038-MW3-01/14/05 <0 5 <0 5 <0 5 <1 0 <50 18 <br /> 2038-MW4-01/13/05 <0 5 <0 5 <0 5 <1 0 <50 10 <br /> 2038-MW5-01114105 7,400 2,100 2,400 10,000 35 <50(d) <br /> 2038-M 6-01/14/05 <0 5 <0 5 <0 5 <1 0 <50 35 <br /> 2038-MW7-01/14105 <0 5 <0 5 <0 5 <1 0 <50 20 <br /> Units <br /> µg/L=micrograms per Mer=parts per billion(ppb) <br /> mg/L=milligrams per liter=parts per million(ppm) <br /> (d) =Sample diluted due to high concentration of target analytes and/or high organic content <br /> Analytical <br /> B,T,E,X=benzene,toluene,ethyl benzene,total xylenes <br /> MTBE=Methyl tertiary-butyl ether <br /> TPH-G=total petroleum hydrocarbons quantified as gasoline <br /> FUTURE WORK <br /> The next quarterly groundwater monitoring event is scheduled for April 2005 In the Additional Soil and <br /> Groundwater Investigation Report and Work Plan Addendum, dated July 12, 2004, Condor recommended <br /> and described the installation of five multi-screened, discreet depth monitor wells at the site to further <br /> investigate the lateral and vertical extent of groundwater contamination Installation of the wells is <br /> pending the approval of the work plan addendum by the SJCEHD <br /> t <br /> Ia <br /> CONDOR <br />