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Table 4 <br /> Groundwater Analytical Data <br /> • Former Unocal Service Station 0123 <br /> 1034 Central Avenue at 11th Street <br /> Tracy,California <br /> Total Petroleum Hydrocarbons <br /> TPN as Gasoline BTEX compounds,TPH as Diesel and Total Oil and Grease <br /> TPN as Ethyl- Total TPH as Total Oil <br /> Date Gasoline Benzene Toluene benzene Xylenes Dies(ppel <br /> I and G�porease <br /> SamEleDSam led b b b <br /> U-1 6f?J95 6,200 15 21 38 610 1,800- NA <br /> U-2 6!295 780 21 2 4 5 9 5 6 190' NA <br /> U-3 6/2195 ND ND ND ND ND ND ND <br /> Pur eable Halogenated Hydrocarbons and Metals <br /> Date Tetrachloro- Tnchloro- Cadmium Chromium Lead Nickel Z <br /> nc <br /> Sample ID sampled ethene b ethane b m m m <br /> U-3`- 612195 6 7 0 51 ND 059 0 091 050 072 <br /> • = Sequoia Analytical Laboratory reported that the hydrocarbons <br /> detected did not appear to be diesel,and are probably gasoline <br /> Ail EPA Method 8010 constituents were non-detectable <br /> except as noted above - <br /> ND = Non-detectable <br /> NA = Not Analyzed <br /> ppb = parts per billion(or pgJL,micrograms per liter) <br /> ppm = parts per million(or mg/L,milligrams per liter) <br /> see certified analytical reports for detection limits <br /> November 22,1995 <br /> 3100971A1TBLS XLS <br />