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J <br /> Table 3 <br /> Summary of Groundwater Analytical Results <br /> .r <br /> UNOCAL Bulk Plant 0788 <br /> 8203 East 11th Street <br /> Tracy, California <br /> Well Sample TPH Gasoline TPH Diesel Benzene Toluene Ethylbenzene Xylenes <br /> Number Date (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> U-1 11/11/90 140 NO 19 NO 2.4 3 <br /> 02/14/91 60 NO 10 NO NO 2.1 <br /> 05/23/91 NO NO 56 NO NO 1.0 <br /> 08/30/91 NO NO 13 NO NO NO <br /> J <br /> 11/06/91 NO NO NO NO NO NO <br /> 02/19/92 NO NO NO NO NO NO <br /> 03/31/92 NO NO 2.1 NO NO NO <br /> U-2 11/11/90 670 NO 2 NO NO 99 <br /> 02/14/91 230 NO 6.9 NO 4.5 35 <br /> 05/23/91 350 NO 10 NO 13 57 <br /> 08/30/91 1,700 NO 53 NO 90 110 <br /> 11/06/91 290* NO 18 NO 12 30 <br /> 02/19/92 320 NO 9.2 NO 23 44 <br /> 04/01/92 130 NO 4.6 NO 8.0 28 <br /> U-3 11/11/90 NO NO NO NO NO NO <br /> 02/14/91 NO NO NO NO NO NO <br /> 05/23/91 NO NO NO NO NO NO <br /> 08/30/91 NO NO NO NO NO NO <br /> 11/06/91 NO NO ND NO NO NO <br /> 02/19/92 NO 3,700 NO NO NO NO <br /> 04/01/92 NO NO NO NO NO NO <br /> U-4 05/23/91 NO 50* NO NO NO NO <br /> 08/30/91 NO NO NO NO NO NO <br /> 11/06/91 NO NO NO NO NO NO <br /> 02/19/92 NO NO NO NO NO NO <br /> 04/01/92 NO NO NO NO NO ND <br /> Detection Limit 50 50 0.5 0.5 0.5 0.5 <br /> J <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 /> NO = not detected <br /> * = atypical chromatograph pattern; see laboratory reports, Appendix B <br /> J <br /> 3100103/REPORT3 June 11, 1992 <br />