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January 9, 1992 <br /> Unocal Station No 6981, Stockton, California <br /> F <br /> TABLE 2 <br /> RESULTS OF CHEMICAL ANALYSES OF GROUND-WATER SAMPLES <br /> Unocal Service Station No. 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> (page 2 of 3) <br /> Sample <br /> ID Date TPHg B T E X <br /> W-51-MW3 02/21/90 3 , 400 <0 . 50 [0 . 50 <0 . 50 0. 95 <br /> 10/18/90 NS <br /> 11/19/90 NS <br /> 12/27/90 NS <br /> 01/28/91 NS <br /> 04/02/91 NS <br /> 07/18/91 NS <br /> 09/30/91 NS <br /> 11/14/91 NS <br /> Results in parts per billion <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> B = Benzene, T = Toluene, E = Ethylbenzene, <br /> X = Total xylene isomers <br /> NS = Not sampled <br /> < = Below detection limit for analytical method used <br /> Sample designation: <br /> W-50-MW1 <br /> Monitoring well number <br /> Sample depth in feet below well casing <br /> Water sample <br /> 388432-6032-6 <br />