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WI-qIIIMn <br /> ME271- <br /> May 3, 1991 <br /> Quarterly Monitoring, First Quarter, 1991 AGS 380326 <br /> Unocal Service Station 6981, Stockton, California— <br /> TABLE 2 Or <br /> CI.FI,NLsA'iTVE RESULTS <br /> $ CHeelStat onLNo�SUnoc6981WATER SAt�LES <br /> 4707 Pacific Avenue <br /> Stockton, Califcrnia <br /> (page 1 of 2) <br /> Sample B T E X <br /> ID Date TPHg <br /> W-50-MW1 02J21/90 <br /> 660 1.7 1.9 <0.54 0.56 <br /> 3-0/18/90 NS <br /> 11/19/90 NS <br /> 12/27/90 NS <br /> 01/28/91 NS <br /> 75 21 140 <br /> W-51-MW2 02/22/90 12,000 1,900 <br /> 10/18/90 ITS 4 <br /> 11/'9/90 NS <br /> 12/27/90 <br /> ol/28/91 NS <br /> W-51-MW3 02/21/90 3,400 <0.50 <0.50 <0.5D 0.95 <br /> 10/18/90 NS <br /> 11/19/90 NS <br /> 12/27/90 PIS <br /> ol/28/91 NS <br /> Results in parts per billion gasoline <br /> TPHg = Total petroleum hydrocarbons as g <br /> B = Benzene, T = Toluone, E = Ethylbenzene, <br /> X = Total xylene isomers <br /> NS = Not sampled <br /> limit for analytical method used <br /> < = Below detection <br /> Sample designation: <br /> W-50-•MW1 <br /> �-- Monitoring well number <br /> �— Sample depth in feet below well casi_na <br /> Water sample <br /> h <br /> Apcal ed GeOSYSteMS <br />