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January 9, 1992 <br /> Unocal Station No 6981, Stockton, California <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 1 of 3) <br /> Sample <br /> ID Date TPHg B T E X <br /> W-50-MW1 02/21/90 660 1 7 1 . 9 <0 . 50 0 . 56 <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 /> W-51-MW2 02/22/90 12 , 000 1 , 900 75 21 140 <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 /> L--- Sample depth in feet below well casing <br /> Water sample <br />• if0 <br /> 38032-632-6 <br />