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Mr Michael Walton Walton Engineering August 4, 1998 TABLE 1 ILABORATORY RESULTS OF SOIL SAMPLE ANALYSES UNDERGROUND FUEL STORAGE TANKS I1301 WEST KETTLEMAN LANE, LODI, CALIFORNIA Sample Number TPHg Benzene Toluene Ethyl- Total MtBE tBA benzene Xylenes IStorage Tanks <1 0 <0 005 <0 005 <0 005 <0 010 S-17-Tin <0 005 <0 050 S-17-T1s <1 0 <0 005 <0 005 <0 005 <0 010 <0 005 <0 050 I S-17-T2n <1 0 <0 005 <0 005 <0 005 <0 010 <0 005 0 050 5-17-T2s <10 <0 005 <0 005 <0 005 <0 010 9.8 31.0 S-18-T3n <1 0 <0 005 <0 005 <0 005 <0 010 0.480 0.900 S-17-T3s <1 0 <0 005 <0 005 <0 005 <0 010 0.120 5 2 Dispenser Island S-4-FD1 <1 0 <0 005 <0 005 <0 005 <0 010 <0 005 0.075 <0 005 0 0 0 S-5-FD2 <1 0 <0 005 <0 005 <0 005 0.012 Laboratory results of the soil samples are reported in milligrams/kilogram (parts per million) TPHg=Total Petroleum Hydrocarbons in the range of gasoline MtBE=Methyl tertiary-butyl ether I� tBA=tertiary-butyl alcohol < =Less than the laboratory method reporting limit na=not analyzed I TABLE 2 ' LABORATORY RESULTS OF SOIL SAMPLE ANALYSES SOIL STOCKPILE 1301 WEST KETTLEMAN LANE, LODI, CALIFORNIA Sample Number TPHg Benzene Toluene Ethyl- Total MtBE Totalbenzene Xylenes Lead ISoil Stockpiles SPla-d 15 <0 005 <0 005 <0 005 0 021 na <10 SP 1 e-h <1 0 <0 005 <0 005 <0 005 0.014 na <10 ' SP11-1 <1 0 <0 005 <0 005 <0 005 <0 010 na <10 SP2a-d <10 <0 005 <0 005 <0 005 <0 010 na <10 SP2e-h <1 0 <0 005 <0 005 <0 005 0.045 na <10 ' Laboratory results of soil samples are reported in milligrams/kilogram(parts per million) TPHg=Total Petroleum Hydrocarbons in the range of gasoline ' MtBE=Methyl tertiary-butyl ether < =Less than the laboratory method reporting limit na=not analyzed I GRA YLAND ENVIRONMENTAL ' Grayland 022-140 trr 4