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0 <br /> 31-0329 <br /> Table 1 <br /> Summary of Results of Ground Water Sampling <br /> Chevron Service Station # 9-6465 <br /> 5608 North Pershing Drive, Stockton, California <br /> Concentrations in parts per billion (ppb) <br /> WELLDATE OFs.... CASING:p DEPTH s.:rsGROUND <br /> '.1'PH-Gs:s..r..B r.rs.aae.TF.......r.X..r.edmaa.1.2-DCA:v.LAB <br /> sss.r <br /> ID SAMPLING/ ELEVATION TO WATER <br /> r...ss.r..aMONITORING <br /> WATER <br /> ELEVATION <br /> sr..ss...ar...wa.r....s...s...ssrs.....o...........rs.os.....rr....s.s.sr. <br /> A --- SAL <br /> NA ND<0.5 N0.5 ND<0.5 ND<0.5 <br /> TB X <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<0.5 --- PACE <br /> TB 05/09/90 NA NA NA ND<50 ND<0.3 ND<0.3 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<0.5 --- SAL <br /> TB 10/17/91 NA NA NA ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- SAL <br /> TB 01/09/92 NA NA NA ND<50 ND<0.5 ND<0.5 ND<0.5 --------------------------- <br /> --- SAL <br /> --- -----------------------------�------------�----------•----------------- <br /> EXPLANATION ABBREVIATIONS: ---- <br /> TPH-G sTotal Petroleum Hydrocarbons as Gasoline D zTrip%DupliBlan <br /> (EPA method 8015 modified) <br /> cate <br /> B :Benzene (EPA method 8020 or 8240) B & C :Brown & Caldwell Labe <br /> T :Toluene (EPA method 8020 or 8240) CCAS :CCAS Labs <br /> E :Ethylbenzene (EPA method 8020 or 8240) SAL :Superior Analytical Labe <br /> X :Xylenes (EPA method 8020 or 8240) GTEL .GTEL LABS <br /> 1,2-DCA s1,2-Dichloroethane PACE :PACE Labs <br /> --- :Not Analyzed/Not Measured * :Not sampled due to insufficient volume of <br /> NA :Not Applicable/Not Available water in well. <br /> ND :Not Detected ** :Sampled separately to confirm results. <br /> Notes Top of casing and ground water elevations are expressed as feet above mean sea level (NGVD -1929) . <br /> ------------------------------------------------ <br /> Page 8 <br /> 03-Feb-92 <br />