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_ <br /> ZM <br /> a <br /> Table 2 <br /> Groundwater Anslyt[cal Results <br /> UNOCAL Bulk Plant 0788 <br /> 8203 East 11th Street <br /> Tracy,Calffomia E <br /> Well Sample TPH Gasoline TPH Diesel Benzene Toluene Ethylbenzene Xyienes <br /> Number Date (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> U-i 11/11/90 140 NO 19 NO 2.4 3 <br /> 02/14/91 8o NO 10 NO ND 2.1 <br /> 05/23/91 ND NO 56 NO NO 1.0 E <br /> 08/30/91 NO ND 13 NO NO NO i <br /> I <br /> s U-2 11/11/So 870 NO 2 NO ND 99 <br /> 02/14/91 230 NO 6.9 ND 4.5 35 <br /> i 05/23/91 350 NO 10 NO 13 57 I <br /> 08/n/91 1,700 NO 53 NO 90 110 F <br /> U-3 11/11/90 NO ND NO NO NO NO <br /> 02/14/91 NO ND NO ND NO NO <br /> r <br /> 05/23/91 NO NO NO ND NO NO <br /> 08/30/91 NO ND NO ND? ND <br /> i <br /> U-4 05/23/91 NO SU* NO NO NO NO <br /> 08/30/91 NO ND-. NO ND ND NO <br /> f U-5 5/23/91 3,200 180* 42 240 68 440 <br /> i 08/30/91 2,200 380 100 13 71 170. j <br /> a f <br /> U-6 05/23/91 240 280* 17 6.0 3.0 22 <br /> 08/30/91 ND NO , 0.5 0.5 0.37 . 1.9 <br /> I Detsction Limit 50 50 0.5 0.5 0.5 0.5 <br /> j <br /> TPH gasoline =total petroleum hydrocarbons calculated as c�asoline <br /> " TPH diesel = total semi-and non-volalile hydrocarbons calculated as diesel <br /> I opb = parts per billion <br /> NO = not detected <br /> * = non-typical chromatograph pattem;see laboratory reports,Appendix B I <br /> r <br /> 3 <br /> { j i <br /> F <br /> l <br /> a <br /> 'c <br /> 3100102/3091 October 15,1991 <br />