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First Quarter,2002 Quarterly Groundwater Monitoring Report <br /> Canepa's Car Wash,Pacific Avenue,Stockton,CA <br /> Page 3 <br /> . Table 2 <br /> Laboratory Analytical Results(January 9 and 10,2001) <br /> Constituent: Benzene Toluene Ethyl Total TPH-G MTBE <br /> MCL I pg/L 150 pg/L Benzene xylenes 13 gg/L <br /> 700 pg/L <br /> Detection Limit: 0.5 0.5 0.5 1.0 0.05 0.5 <br /> Sample ID gg/L gg/L gg/L gg/L mg/L gg/L <br /> 1707-MW1-1/10/02 744 286 95 245 2.6 580 <br /> 1707-MW2-1/09102 22,300 1,150 2,350 5,690 64 <50 <br /> 1707MW3-1110/02 <0.3 <0.3 <0.3 <0.6 <0.05 162 <br /> 1707-MW4-1/10/02 <0.3 <0.3 <0.3 <0.6 <0.05 <1.0 <br /> 1707-MW5-119/02 <0.3 <0.3 <0.3 <0.6 <0,05 <1.0 <br /> 1707-MW6-1/9/02 <0.3 <0.3 <0.3 <0.6 <0.05 <1.0 <br /> 1707-MW7-119102 <0.3 <0.3 <0.3 <0.6 <0.05 <1.0 <br /> 1707-MW8-1/10/02 <0.3 <0.3 <0.3 <0.6 <0.05 <L0 <br /> 1707-MW9-1/9/02 <0.3 <0.3 <0.3 <0.6 <0.05 <L0 <br /> 1707-MWIO-1/10/02 1 <03 <0.3 <0.3 <0.6 <0.05 <1.0 <br /> 1707-MW 11-1/9/02 2.5 0.4 2.8 3.8 0.34 57 <br /> 1707-MW12d-1/9102 35 51 22 109 0.76 <1.0 <br /> Unit Conversions: Analytical: <br /> pg/L:parts per billion(ppb) TPH-G=total petroleum hydrocarbons,quantified as gasoline, <br /> mg/L:parts per mill ion(ppm) MTBE=methyl-tertiary butyl ether <br /> FUTURE WORK/RECOMMENDATIONS <br /> Continued quarterly groundwater monitoring and operation of the soil vapor extraction system using <br /> vapor phase carbon. Condor also recommends that a meeting be arranged with the property owner, the <br /> PHS/EHD, and Condor to discuss potential additional site remediation and investigation activities that <br /> will lead to consideration of site closure. <br /> i <br /> i a CONDOR <br />