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i <br /> i <br /> e <br /> sr� <br /> s <br /> t <br /> 1+6 <br /> i <br /> Table 3 <br /> Summary at Groundwater Analytical Results <br /> UNOCAL Bulk Plant 0788 <br /> p 8203 East 11th Street <br /> t,R Tracy,California <br /> �F <br /> t <br /> i. 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 /> lr� 02/14/91 60 NO 10 ND ND 2.1 <br /> f r 05/23/91 NO ND 56 NO NO 1.0 <br /> Lj U-2 11/11/90 610 NO 2 ND ND 99 <br /> 02/14/91 230 NO 6.9 NO 4.5 35 <br /> r "^; 05/23/91 350 NO 10 NO 13 57 <br /> .�t <br /> U-3 11/11/,90 NO NO NO NO NO NO <br /> r 02/14./91 ND NO NO ND ND NO. <br /> { 05/23/91 . ND NO ND ND NO NO <br /> U-4 05/23/91 NO 50* NO NO NO ND il <br /> r <br /> U-5 05/23/91 3,200 180* 42 240 68 440 <br /> r- U-6 05/23/91 240 280* 17 6.0 3.0 22 <br /> Detection Umft 50 50 0.5 0.5 9.5 0.5 <br /> a <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 /> t NO = not detected <br /> L * W non-typical chrol'natograph pattern;see laboratory reports,Appendix B <br /> r <br /> i <br /> 31130101/REPORT2 . September 30,1991 <br />