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r • [ <br /> 30-329 <br /> Table 1 <br /> Summary of Results of Ground Water Sampling <br /> Chevron Service Station u 9-6465 <br /> 5608 North Pershing Dasve, 5tocktun, California <br /> Concentrations in parts per billion (ppb) <br /> WELL DATE OF CASING DEPTH GROUND TPH-G $ T E X EDC LAS <br /> ID SAMPLING/ ELEVATION TO WATER <br /> MONITORING WATER ELEVATION <br /> RINSATE 03/23/89 NA NA NA ND(500 ND(0 5 ND<O 5 ND(0 5 ND(O 5 --- SAL <br /> RINSATE 07/19/89 NA NA NA ND(500 ND(0 5 ND(0 5 ND(0 5 ND(0 5 --- SAL <br /> RINSATE 07/14/90 NA NA NA ND(50 ND(0 3 ND(0 3 ND(O 3 ND(0 6 - GTEL <br /> RINSATE 10/22/90 NA NA NA ND(50 ND(O 3 ND(O 3 ND(O 3 ND(O 6 --- GTEL <br /> RINSATE 01/19/91 NA NA NA ND(50 ND(0 5 ND(0 5 ND(0 5 ND(O 5 --- SAL <br /> TB 03/23/89 NA NA NA ND(500 ND(0 5 ND(0 5 ND(0 5 ND(O 5 --- SAL <br /> TB 07/19/89 NA NA NA ND(500 ND(O 5 ND(O 5 ND(O 5 ND(O 5 --- SAL <br /> T8 10/05/89 NA NA NA ND(250 ND(0 5 ND<O 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(O 6 --- GTEL. <br /> T8 07/04/90 NA NA NA ND<50 ND(O 3 ND(0 3 ND(0 3 ND(O 6 --- GTEL <br /> TB 08/17/90 NA NA NA ND(50 ND(O 3 0 3 ND(0 3 1 --- GTEL <br /> TB 10/22/90 NA NA NA ND(50 ND(O 3 ND(O 3 ND(0 3 ND(0 6 --- GTEL <br /> TO 01/19/91 NA NA NA ND(50 ND<O 5 ND<O 5 ND(O 5 ND(0 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 3 C Brown 3 Caldwell Labs <br /> E Ethylbenzene (EPA method 8020 or 8240) CCAS CCAS Labs <br /> X Xylenes (EPA method 8020 or 8240) SAL Superior Analytical Labs <br /> EDC 1 .2-Dichioroethane GTEL GTEL LABS <br /> --- Not Analyzed/Not Measured PACE PACE Labs <br /> NA Not Applicable/Not Available * Not sampled due to insufficient water in well <br /> * Sampled separately to confirm results. <br /> Note Top of casing and Ground Water Elevations are expressed as feet above mean sea level (NGVD -1929) <br /> --------------------------------------------------------------------------------------------------------------------------------- <br /> Llcm <br /> F <br /> 08-Mar-91 Pap* r <br />