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W. <br /> F. Ma <br /> r' <br /> IffiN W-11r <br /> F <br /> ly 8, 1988 AGS Job No. 38032-1 <br /> OCAL Service Station No. 6981, Stockton, California <br /> TABLE 2 <br /> yti CHEMICAL RESULTS OF SOIL SA14PLES <br /> UNOCAL Service Station No. 6981 <br /> 4707 Pacific Avenue <br /> C`•.ockton, California <br /> Sample Ethyl- Total. <br /> Number Date TPH Benzene benzene . Toluene Xylenes <br /> S-19-LINE2 5/19 1,407 2.3 57.7 102.2 391.9 <br /> 5-19-LINE2A 5/19 <2 <0.05 <0.05 <0.05 <0.05 <br /> S-11-LINE3 5/19 <2 <G.05 <0.05 <0.05 <0.05 <br /> S-7--LINE4 5/19 <2 <0.05 <0.05 <0.05 <0.05 <br /> S-5-LINE8 5/20 <2 <0.05 <0.05 <0.05 <0.05 <br /> S-18-LINE9 5/20 1,726 23 72 ..167 396 <br /> All results in parts per million <br /> TPH W Total petroleum hydrocarbons <br /> < = Less than the detection limit for the analytical <br /> methods. used <br /> Sample designation: <br /> S-10--LINE2 <br /> �-- Product delivery line sample location number <br /> Sample depth in feet below ground surface <br /> Soil sample <br /> Based on 1) the analytical results of soil sample S-18-LINE9 <br /> collected adjacent to the underground storage tanks and 2) the <br /> age of the tanks, approximately 25 years for two of the tanks, <br /> and 5 to 7 years for the third tank, UNOCAL Corporation decided <br /> to remove the underground storage tanks and replace them with new <br /> tanks. <br /> 7 <br /> Aigo/oed lGeoSi/SPemS <br />