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Table 2 <br /> Groundwater Analytical Results <br /> (Continued) <br /> UNOCAL Bulk Plant 0788 <br /> 8203 East 11th Street <br /> Tracy, Calffomia <br /> Well Sample TPH Gasoline TPH Diesel Benzene Toluene Ethylbenzene Xylenes <br /> Number Date (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> U-6 05/23/91 240 280* 17 6.0 3.0 22 <br /> 08/30/91 ND ND 0.5 0.5 0.87 1.9 <br /> 11/06/91 280 ND 8.2 4.8 1826 <br /> 02/19/92 4,000 ND 210' 78 '. 180 _� _ 610 <br /> Detection Limit 50 50 0.5 0.5 0.5 0.5 <br /> TPH gasoline = total petroleum hydrocarbons calculated as gasoline <br /> TPH diesel = total semi-and non-volatile hydrocarbons calculated as diesel <br /> ppb = parts per billion <br /> ND = not detected <br /> * = non-typical chromatograph pattern; see laboratory reports,Appendix B <br /> 3100104/1092 March 24, 1992 <br />