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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3708,2705 COUNTRY CLUB BOULEVARD,STOCKTON,CA <br /> Reference Depth to Groundwater Ethyl- Total TPH as Other Oxygenates Dissolved <br /> Monitoring Elevation Groundwater Elevation Benzene Toluene benzene Xylenes gasoline MTBE and Additives Lead <br /> Well Date (feet) feet (feet) ( g/L) ( gfp ( ) /L) ( ) ( L) (It ) <br /> VEW3 08/16/01 NM dry NC NS NS NS NS NS NS NS NS <br /> VEW3 11/20/01 NM dry NC NS NS NS NS NS NS NS NS <br /> VEW3 03/12/02 o NM 725 NC 120 <10 <10 <10 16,600 30,300h 80 0"1/1,050" NA <br /> VEW3 05/02/02 o NM 750 NC <0 5 <0 5 <0 5 <0 5 12,900 16,350 1,060" NA <br /> VEW3 09/23/02 NM 868 NC NS NS NS NS NS NS NS NS <br /> VEW3 12/06/02 o NM 871 NC 344 250 165 178 NA 54,000 ND NA <br /> VEW3 03/17/03 NM 790 NC 126 255 125 35 7,080 11,600h 30 4"'/21,000" NA <br /> VEW3 05/29/03 NM 841 NC 285 30 25 365 7,680 3,150 16 5'"/23,400" 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 /> VEW3 03/03/04 o,p NM 719 NC 940 07 17 1 1 1,540 932h 200,000" NA <br /> VEW3 03/22/04 o NM 705 NC 101 <0 5 13 08 2,060 920h 81,000" NA <br /> VEW3 06/01/04 o NM 7.67 NC 626 0.9 0.9 <0 5 1,040 330` 114,000" NA <br /> a=Total volatile hydrocarbons <br /> b=Result is an estimated value because it exceeds the linear range <br /> c=A typical chromatogram with unidentified peak(s)within the range of gasoline hydrocarbons Chlorinated hydrocarbons are suspected <br /> A groundwater sample collected from monitoring well MW6 on 4/17/92 contained chlorobenzene and 1,2-dichlorobenzene <br /> d=A typical chromatogram Analysts of this sample by EPA Method 624 on 4/17192(past EPA recommended holding time)was positive for the <br /> following chlorinated hydrocarbons vinylchlonde,cis-1,2-dichloroethene,trichloroethane and tetrachloroethane These peaks resulted to a positive <br /> fuel hydrocarbon result <br /> I <br /> e=A typical chromatogram Four unknown peaks were observed causing a positive fuel hydrocarbon result Chlorinated hydrocarbons are suspected <br /> f=A typical chromatogram An unknown peak was observed between MTBE and benzene Chlorinated hydrocarbons are suspected <br /> g=A typical chromatogram Analysts of this sample by EPA Method 624 on April 17,1992(past EPA recommended holding time),was positive for the <br /> following chlorinated hydrocarbons chlorobenzene and 1,2-dichlorobenzene <br /> b=MTBE by EPA Method 8260 <br /> Page 21 of 22 <br /> g*mjects1737081masterlwp\g060413708gw As <br />