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TABLE 2 GROUNDWATER MONITORING DATA, FORMER EXXON RS 7-3708,2705 COUNTRY CLUB BOULEVARD, STOCKTON, CA <br /> Other <br /> Reference Depth to Groundwater Ethyl- Total TPH as Oxygenates and Dissolved <br /> Monitoring Elevation Groundwater Elevation Benzene Toluene benzene Xylenes gasoline MTBE Additives Lead <br /> Well Date (teet) (feet) (feet) (µg11.,) WIL) W1L) (Ag/L) (tg/L) (Ug/L) (tag1L,) (µg1L,) <br /> VEW3 05/29/03 NM 841 NC 285 30 25 365 7,680 3,150h 16 5m123,400" NA <br /> VEW3 09/18/03 NM dry NC NS NS NS NS NS NS NS NS <br /> VEW3 12/09/03 NM dry NC NS NS NS NS NS NS NS NS <br /> a=Total volatile hydroca rhons <br /> b=Remit is ail estimated value because it exceeds the linear range <br /> c=A typic-kl chroruatogrirn will)unidentified peak(s)within the range of gasoline hydrocarbons Chlonnated hydrocarbons are suspected <br /> A groundwater sample collected from niomtonng well MW6 on 4117192 contained chlombenzene and 12 dtt ldorobenzene <br /> d=A typical chroinalogram Analysts of thus sample by EPA Method 624 on 4117192(past EPA recommended holding time)was positive for die <br /> following dilonnated hydrocarbons vrnylcldonde cis-l,2-dicbloroethene trichloroethane and tetracldoroethane These peaks resulted to a positive <br /> fuel hydrocarbon result <br /> e=A typical cltrarnatogram Pour unknown peals were observed causurg a positive fuel hydrocarbon result Cldonnated hydrocarbons are suspected <br /> f =A typical chromatograni Ali unknown peak was ohservtA betweLa MTBE and benzene C ilonnated hydrocarbons are suspected <br /> g=A typical cbrontatograni. Analysis of this sample by hPA Method 624 on Apnl 17,1992(past EPA recommended holding time) was positive for the <br /> following cltlonnaled hydrocarbons chlorobenzene and l 2 dichlorobenzene. <br /> h=MTBE by EPA Method 8260 <br /> i=Unidentified hydrocarbon in the C6-C 12 range. <br /> i=1 2-DILMOrOetlldne <br /> k=TPH as diesel <br /> 1=Sample analyzed outside EPA recommended holding lime <br /> to=tett Amyl methyl ether <br /> n=Tertiary butyl dkohol <br /> o=Grab groundwater sample collected from well <br /> TPH=Total Petroleum Hydi-marbons by EPA Method 8015 <br /> MTBE=Mthly)Utiary butyl Wier by EPA Metliod 8020 Modified except as noted <br /> rIproject61737081mvsicr\%xp1g12030708gw xis Page 20 of 21 <br />