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1 r <br /> K <br /> July 8, 2988 <br /> UNOCAI, Service Station No. 6981, StocktczAGSCaob NO. 38032-1 <br /> the northeast corner and center of the tank cavity. Results of <br /> soil samples collected at the limits of the excavation, are <br /> presented in Table 4. <br /> TABLE <br /> CHEMICAL RESULTS OF4SOIL SAMPLES <br /> UNOCAL Service Station No. 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Sample <br /> Number TpH Ethyl- Total <br /> Benzene benzene Toluene <br /> S-22-G Xylenes <br /> ].,X00 , 84 <br /> 5-22-H <1.0 <O.I 66 110 230 <br /> 5-22-I 2.4 <0.1 <0.1 <0.1 . .:: <br /> 5-20-J <1.0 <0.1 0.2 0.2 <br /> <0.3 <0.1 <br /> 1:8 <0.1 <0.1 <0.1 <br /> 5-17-L <1.0 <0.1 <0.1 <br /> 5-17-M <0.1 <br /> <0.1 <br /> 5=197N <1.0 <0.1 <0.1 Cp <br /> 5-1�3=P. 1.400 <0.1 <0.1 <D.Z <0.1 <br /> 24... <br /> 32 ' 110 240 <br /> All results in <br /> parts per million <br /> TPH = Total petroleum hydrocarbons <br /> < Less than the detection limit for the analytical <br /> methods used <br /> Sample designation: <br /> V 5-22-J <br /> ��— Sample location <br /> -- Sample depth in feet be <br /> lowround <br /> Sail sample g surface t <br /> RESULTS AND DISCUSSIoll <br /> Laboratory analyses of the soil-samples-collected indicate that-_ <br /> - - - -- - - <br /> �' soil <br /> contamination :exists at approximately- - -- - - <br /> 20 feet below grade in <br /> : 12 <br /> A <br /> polied C9e®Systerns <br />