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30-0136-01 <br /> Table 1 <br /> Summary of Results of Ground Water Sampling <br /> Former Mobil Oil Bulk Plant <br /> 500 East Grantline Road. Tracy. California <br /> Concentrations in parts per billion (Ppb) <br /> ..r..ar.ar.saeecxa..a.r.s..as:ais�a.r.:a.r.c:s..a..::........rvwa.=.r............•'7aa.r.a:.E.aaa,w.. ..••••"FC:r..'.r'P'b.r <br /> ........LAB• <br /> WELL DATE OF CASING DEPTH GROUND TPH-D TPH-G B <br /> ID SAMPLING/ ELEVATION TO WATER <br /> MONITORING WATER ELEVATION <br /> :a..a...r,e........a......r.rr....u...wa.r�....r..wa..r...........a.s.........wa........r...ay.w.....:►eaw....r..w.rv.....a.m.r'CAL - <br /> 8-5 05/01/91 ND(50 ND<50 ND<O.5 NO(0.5 ND<0.5 ND<0.5 ^�- ==- <br /> B-6 05/01/91 250 1400 ND(0.5 NDC0.5 ND<0.5 ND(0.5 --- --- <br /> CAL <br /> B-7 05/01/91 -- 60000 110000 560 ND<0.5 1100 66 __- - <br /> CAL <br /> --- CAL <br /> 05/01/91 --- ND<50 540 ND<0.5 ND(O.5 ND40.5 ND(0.5 <br /> B-8 ^_ CAL <br /> B-9 05/01/91 --- 270 ND(O.5 ND(0.5 ND�0.5 ND(0.5 <br /> (AW-8) ----- i <br /> ^ <br /> EXPLANATION OFABBREVIATIONS: <br /> pb :Organic Lead <br /> TPH-D :Total Petroleum Hydrocarbons as Diesel --- ;Not Analyzed/Not Measured <br /> (EPA method 8015 modified) NA :Not Applicable/Nut Available <br /> 7PH-G :Total petroleum Hydrocarbons es Gasoline ND :Not Detected <br /> (EPA method 8015 modified) AEL :American Environmental Laboratories, Inc. <br /> 8 :Benzene (EPA method 8020 or 8240) CAL :Chromalab, Inc_ <br /> T :Toluene (EPA method 8020 or 8240) PACE Pace. Inc. i <br /> E :Ethylbenzene (EPA method 6020 or 8240) SAL :Superior Analytical Laboratories. Inc. <br /> X :Xylenos (EPA method 8020 or 8240) <br /> FC <br /> :Fecal Caiiform (Standard Method 908C-quantified in MPN/100 mL; <br /> meaning most probable number of organisms Per 100 ml of water). <br /> Note: <br /> r Top of casing and Ground Water Elevations are oxpressad es feet above meartroximatasea ecenterpine2of Fast Grantline Road <br /> p0 . TOP of casing column was tied to a railroad spike set in island on thn epP <br /> 19.5 feet West from the centerline of the railroad spur tracks. T.S.M. 0100. elevation <br /> pp0 r Fecal Coliform analized at Analytical Laboratory. <br /> i <br /> A . Focal Coliform analized at Pacific �rtvironmontal Lof a significant <br /> �s - Elevated reporting limits are due to the presence of a aigniflcant concentration of diesel fuel in this sample. <br /> r*a r Does not match typical gasoline pattern. ---__-_-_.-__ - ---------------------^-- ' <br /> -------------- -^---------^^-----___------------ ------^-^------ -^------------------ <br /> i <br /> Page 2 <br /> t <br />