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Canepa's Car Wash
<br /> 6230 Pacific Avenue,Stockton,CA
<br /> Fourth Quarter Groundwater Monitoring Report,November 2003
<br /> Page 5 of 6
<br /> Table 3
<br /> Groundwater Sample Laboratory Analytical Results (November 9, 2003)
<br /> Constituent, Benzene Toluene Ethyl Total MTBE Gasoline
<br /> MCI, 1 i4l- €50µg/L Be zene Xylenes TPH-G 13 ggfL Oxygenates/Additives
<br /> Analytical Method-* 8260B 8260B 8260B 8260B 8015m 8260B 8260E
<br /> Reporting Limits-+ 0.5 ltg/L 0.5 ltg/L 0.5 pg/L 1.0 gg/L 0.05 0.5 0.5-20,000
<br /> Sample I.D. mg/L µg/L pg/L,
<br /> 1707-MW1-11/9/03 4,600 840 230 630 11 1,100 ( 0
<br /> 722 T]B TBA
<br /> 1707-MW2-11/9/03 12,000 1,100 3,600 5,880 51 <1.0 < 1.0-40
<br /> <0.5-20
<br /> 1707-MW3-11/9/03 <0.5 <0.5 <0.5 <1.0 <0.05 1,100 110(1,2-DCA); 45(TBA);
<br /> 1.8(TAME)
<br /> 1707-MW4-11/9103 <0.5 <0.5 <0.5 <1.0 <0.05 <0.5 <0.5-20
<br /> 1707-MW9-1I/9/03 <0.5 <0.5 <0.5 <1.0 <0.05 <0.5 <0.5-20
<br /> E707-MWi 1-11/9103 <0.5 <0.5 <0.5 <1.0 0.057 7.1 <0.5-209.3 TBA
<br /> 1707-MW12D-11/9/03 <0.5 <0.5 <0.5 <1.0 <0.05 <0.5 <0.5-20
<br /> 1707-SVE4-11/9/03 86,000 77,000 5,000 21,700 360 520,000 <500-20,000
<br /> • 24,000(TBA)
<br /> Units: Analytical:
<br /> mg/L=milligrams per liter=parts per million(ppm) B,T,E,X=benzene,toluene,ethyl benzene,total xylenes
<br /> Ag/L=micrograms per liter=parts per billion(ppb) TPH-G=total petroleum hydrocarbons quantified as gasoline
<br /> Gasoline oxygenates/additives= methyl tertiary butyl ether(MTBE),ethanol,
<br /> tertiary butanot (TBA), di-isopropyl ether (D€PE), ethyl tertiary butyl ether
<br /> (ETBE), tertiary amyl methyl ether (TAME), 1,2-dichloroethane (1,2-DCA),
<br /> 1,2-dibromoethane(1,2-EDB)
<br /> SOIL VAPOR EXTRACTION SYSTEM
<br /> The SVE system has,not been sampled since December 19, 2002. The system was shut down on January
<br /> 31, 2003, to allow modifications to the system and property development. SJEHD approved a remedial
<br /> action plan for upgrading the system and installing a groundwater pump and treat system that will operate
<br /> in tandem with the upgraded SVE system. Please reference the following section for additional
<br /> information regarding the anticipated remediation.
<br /> FUTURE WORK
<br /> Condor ctthrnittPrla Prrihlf-m AccPc.emt-nt Rennrt(PAR) and ('nrrartivP Artinn Plari ((-AP) rlatPrl flrtnl�pr
<br /> 18, 2002, for the site. The CAP recommended preparation of a Remedial Action Plan (RAP) to describe
<br /> the proposed remediation design. Condor prepared the RAP dated March 3, 2003 and submitted it to the
<br /> SJCEHD for approval. In a letter slated October 17, 2003, SJCEHD approved the RAP submitted by
<br /> Condor dated March 3, 2003. Condor is currently conducting project planning/coordination/permitting
<br /> activities associated with the remediation and anticipates starting the fieldwork in early spring 2004. The
<br /> next quarterly groundwater monitoring event is scheduled for January 2004 and will include sampling of
<br /> • the quarterly sampled monitor wells (MW-1, MW-2, MW-3, MW-4, MW-9, MW-11, and MW-12D) and
<br /> soil vapor extraction well SV4.
<br /> �s -
<br /> �' CONDOR
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