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.�• Table 2 <br /> Groundwater Analytical Results <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 ND 2.4 3 <br /> 02/14/91 60 ND 10 NO ND 2.1 <br /> 05/23/91 ND ND 56 NO NO 1.0 <br /> 08/30/91 NO ND 13 ND ND ND <br /> 11/06/91 ND NO NO NO NO NO <br /> 02/19/92 ND NO NO ND NO NO <br /> U-2 11/11/90 670 ND 2 NO NO 99 <br /> 02/14/91 230 NO 6.9 NO 4.5 35 <br /> 05/23/91 350 ND 10 ND 13 57 <br /> 08/30/91 1,700 NO 53 NO 90 110 <br /> 11/06/91 290* ND 18 NO 12 30 <br /> 02/19/92 320 ND 9.2 NO 23 44 <br /> U-3 11/11/90 ND NO NO NO NO NO <br /> 02/14/91 NO ND ND ND NO NO <br /> 05/23/91 NO NO NO NO NO NO <br /> 08/30/91 NO ND ND ND NO NO <br /> 11/06/91 NO NO NO NO ND NO <br /> 02/19/92 NO 3,700 NO NO NO NO <br /> U-4 05/23/91 NO 50* NO NO NO NO <br /> 08/30/91 NO ND ND NO NO NO <br /> 11/06/91 ND NO NO NO NO NO <br /> 02/19/92 NO ND ND NO NO NO <br /> U-5 05/23/91 3,200 180* 42 240 68 440 <br /> 08/30/91 2,200 380 100 13 71 170 <br /> 11/06/91 1,400 ND 66 6.1 54 38 <br /> 02/19/92 4,700 NO 340 660 120 770 <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 />