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31-0308 <br /> Table 1 <br /> Summary of Results of Ground dater Sampling <br /> Chevron Service Station # 9-4275 <br /> 2905 West Benjamin Holt Drive, Stockton, California <br /> Concentratlorms in parts per billion (ppb) _- s=Dossassn=Das=ssaooa <br /> ==occas==o=�ssss=Hoar_==�=o=asssao=a=ss=oo¢a=ssa__==ss <br /> T E X 1,2 1,2 1,3 1,4 F113 TCE LAB <br /> WELL DATE OF TOP OF DEPTH GROUND TPH-G TOG 8 OCA DCB DCB DCB <br /> 1D SAMPLING/ CASING TO WATER <br /> MONITORING ELEVATION WATER ELEVATION <br /> < < --- - ND<1 CCAS <br /> TO 03/22/89 NA NA NA ND<500 --- ND<0.2 ND<O 2 ND<O 2 ND<O 4 ND 0.1 ND 0.2 __. ND<0.5 CGS <br /> TO 06/12/89 NA NA NA ND<50 --- ND<0.2 ND<0.5 ND<O.1 ND<0.2 ND<0.1 ND<O.1 --_ -__ __• <br /> TO 09/07/89 NA NA NA ND<50 --- ND<1.0 ND<0.5 ND<0 1 ND<0 2 ND<0 1 ND<0.1 ... --- ND<0 S ,-- P`CE <br /> TB 12/18/$9 NA NA NA ND<50 --- NO<O.5 ND<O 5 ND<0.5 ND<0.5 ND<0.5 ND<0 5 ___ ND<0 2 --- PACE <br /> TO 03/20/90 NA NA NA ND-050 --- ND<O 5 ND<0.5 ND<0.5 ND<0 5 ND<0.5 kD<0 5 <br /> TO 07/03/90 NA NA NA ND<50 --- ND<O.5 ND<O 5 ND40 5 ND<0 5 --- <br /> --- --- --- --- --- PACE <br /> ND<O 5 ND<0.5 ND<0.5 ND<O 5 --- ... --- ... --- ... PACE <br /> TB 10/19/90 NA NA NA ND<50 _.. ... --- SAL <br /> TO 01/17/91 NA NA NA ND<50 ND<O 5 ND<0.5 ND<0 5 N.. 5 _:_ ___ ... --- SAL <br /> TO 03/19/91 NA NA NA -�� .._ Nu<0.5 ND<0.5 ND<0.5 ND<0 5 --- - --- --- --- --- SAL <br /> TB 07/18/91 NA NA NA ND 50 ND<0.5 ND<O 5 ND<O 5 ND<O 5 --- --- --- --- --- --- SAL <br /> TO 10/31/91 NA NA NA ND<50 --- ___ _-_ --- --- SAL <br /> 76 01/16/42 NA NA NA ND<50 --- ND<O 5 1.8 ND<0.5 ND<0.5 - --- --_ _ _ __. .-_ SAL <br /> TB 06/29/92 NA NA NA ND<50 --- ND<O.5 1 8 ND<O 5 ND<O 5 ___ --- SAL <br /> < ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- _-" --- --- <br /> ND 50 --- <br /> TB 12/10/92 NA NA NA ------------ <br /> ----------------------------^------- <br /> EXPLANATION OF ABBREVIATIONS <br /> TPH-G -Total Petroleum Hydrocarbons as Gasoline Fl13 :Fre hloroethylene <br /> on 113 <br /> (EPA method 8015 modified) Not Anal Not Measured <br /> TOG :Total oil and Grease (EPA method 503D & 503E) Yz <br /> B -Benzene (EPA method 8020 or 8240) D :Duplicate <br /> T :Toluene (EPA method 8020 or 8240) NA Not Appticable/Not Available <br /> E .EthyLbenzene (EPA method 8020 or 8240) NO :Not Detected <br /> X :Xylenes (EPA method 8020 or 8240) TB Trip Blank <br /> 1,2-DCA 1, 2-Dichloroethane SAL -Superior Analytical Labs <br /> 1,2-DCB 1, 2-Dichlorobenzene CCAS Central Coast Analytical Service <br /> 1,3-DCB 1, 3-Dichlorobenzene PACE •PACE Analytical Laboratory <br /> 1,4-DCB 1, 4-Dichlorobenzene <br /> * Does not match typical gasoline pattern <br /> Note Top of casing and ground water elevations are expressed as feet above mean sea level (NGVD - 1929) <br /> I <br />