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r YEMS, Y r <br /> f <br /> y <br /> Quarterly Monitoring, Second Quarter 1990 October 31, 1990 <br /> Former Unocal Station No. 2859, Stockton, California AGS 38012-4 <br /> TABLE 2 <br /> LABORATORY ANALYSES OF GROUND-WATER SAMPLES <br /> Former Unocal Service Station No. 2859 <br /> 1665 Pacific Avenue <br /> Stockton, California <br /> (page 2 of 2) <br /> Sample Sample Ethyl- Total <br /> YD Date 'TPHg Benzene Toluene benzene Xylenes <br /> 1 W-43-MW4 08/28/89 150 <0.50 <0.50 <0.50 1.4 <br /> W-42-MW4 11/30/89 86 <0.50 <0.50 <0.50 <0.50 <br /> W-43-14W4 03/01/90 100 <O.50 <0.50 <0.50 . <0.50 <br /> W-45-MW4 05/30/90 130 <0.50 <0.50 <0.50 <0.50 <br /> W-43-MW5 08/28/89 240 «.50 <0.50 8.1 1.9 <br /> W-43-MWS 11/30/89 95 <0.50 <0.50 2.2 <0.50 <br /> W-43-MW5 03/01/90 80 <0.50 <0.50 2.2 1.3 <br /> W-45-MW5 05/30/90 30 <0.50 <0.50 <0.50 <0.50 <br /> Results in parts per billion (ppb) <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> < Below detection limit or not detected by method of analysis <br /> used <br /> App//ed G,OoSystems - <br />