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0 310-329 <br /> Table I <br /> Summary of Results of Ground Water Sampling <br /> Chevron Service Station No. 9-6465 <br /> 5608 North Pershing Avenue, Stockton, California <br /> Concentrations in parts per billion (ppb) <br /> o r wrr�sss�w r ssr r rsir w rrr r::r rwr a was r srr rr rw wwwr r w rr ww n ss wr r rrr r r mr r rmdsss w sswas w wrr r rr a r rw r wwr r t rr r wwr r smsr r rsr m mw mss dew sy mrs r r aes r <br /> WELL DATE OF CASING DEPTH GROUND TPH-G B T E X 1,2-DCA LAB <br /> ID SAMPLING/ ELEVATION TO WATER <br /> MONITORING WATER ELEVATION <br /> rrwrrrrswrrrswww�rwwwwrwwrrwrrsrrrrrrswrwwwwrrrrrrwrwwwtswe¢rramrmmsrwrmswwwarrwarrwwwrrrww::wrrwrwwrrrsarrrsarmmwswmmwowew <br /> TB 03/23/89 NA NA NA ND<500 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- SAL <br /> TB 07/19/89 NA NA NA ND<500 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- SAL <br /> TB 10/05/89 NA NA NA ND<250 ND<0.5 ND<0.5 ND<0.5 ND<O 5 --- PACE <br /> TB 05/09/90 NA NA NA ND<50 ND<0.3 ND<O 3 ND<0.3 ND<0.6 --- GTEL <br /> TB 07/04/90 NA NA NA ND<50 ND<0.3 ND<0.3 ND<0.3 ND<0.6 --- GTEL <br /> TB 08/17/90 NA NA NA ND<50 ND<0.3 0.3 ND<0.3 1 --- GTEL <br /> TB 10/22/90 NA NA NA ND<50 ND<0.3 ND<0.3 ND<0.3 ND<0.6 --- GTEL <br /> TB 01/19/91 NA NA NA ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- SAL <br /> TB 07/21/91 NA NA NA ND<50 ND<0.5 ND<0.5 ND<0.5 ND<O 5 --- SAL <br /> TB 10/17/91 NA NA NA ND<50 ND<0.5 ND<0 5 ND<0.5 ND<O 5 --- SAL <br /> ---------------•----------------------------------------------------------------------------------------------------------------------- <br /> EXPLANATION OF ABBREVIATIONS: <br /> TPH-G :Total Petroleum Hydrocarbons as Gasoline ND Not Detected <br /> (EPA method 8015 modified) TB :Trip Blank <br /> B -Benzene (EPA method 8020 or 8240) D :Duplicate <br /> T :Toluene (EPA method 8020 or 8240) B & C :Brown & Caldwell Labe <br /> E :Ethylbenzene (EPA method 8020 or 8240) CCAS :CCAS Labs <br /> X :Xylenes (EPA method 8020 or 8240) SAL :Superior Analytical Labs <br /> 1,2-DCA :1,2-Dichloroethane GTEL :GTEL LABS <br /> --- :Not Analyzed/Not Measured PACE zPACE Labs <br /> NA :Not Applicable/Not Available * :Not sampled due to insufficient water in well. <br /> +� :Sampled separately to confirm results. <br /> Note: Tap of casing and Ground Water Elevations are expressed as feet above mean sea level (NGVD -1929) . <br /> -------------------------------------------------------------------------------------------------------------------- ----------------- <br /> I <br />