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ss <br /> Julian Munoz <br /> 10 June 1H87 6 WEISSASSOCUTEsMo <br /> LABORATORY ANALYTIC RESULTS <br /> Analytic results for soil samples from all boring"$ except boring B-2 were <br /> below the detection limits of 10 ppm for TFHC and 0.5 ppm for BTX. A sample <br /> collected from 20.7 £t in boring B-2 had a TFHC concentration of 1,100 ppm. <br /> Analytic results for soil are presented in Table 2. The chain-of-custody <br /> forms and analytic reports are included as Attachments B and C, respectively. <br /> TABLE 2. Soil Sampling Analytic Results - Safeway Meat Packing, Stockton, <br /> California <br /> Boring Date TFHC Benzene TolueneXylenes <br /> ID Sampled Depth <---------------- ppm - --> <br /> B-1 4-7-87 21.2 <10 <0.5 <0.5 <0.5 <br /> E-2 4-7-87 20.7 1100 <0.5 <0.5 <0.5 <br /> 15-3 4-7-87 15.8 <10 <0.5 <0.5 <0.5 <br /> B-4 4-8-87 21.7 <10 <0.5 <0.5 <0.5 <br /> B-6 4-8-87 13.0 <10 <0.5 <0.5 <0.5 <br /> r <br /> B-7 4-8-87 15.7 <10 <0.5 <0.5 <0.5 <br /> B-a 4-8-87 14.7 <10 <0.5 <0.5 <0.5 <br /> CONCLUSIONS <br /> Results of laboratory analyses and the OVA survey indicate that <br /> hydrocarbons are present in both saturated and unsaturated soil adjacent to <br /> the tank cluster. Hydrocarbons occur at or near the water table in borings <br /> B-2, B-3, B-4, B-6, B77 and B-8. Hydrocarbons way have migrated with ground <br /> I <br /> water away from the tank cluster and seasonal fluctuations of the ground water <br /> - - - -- --- --- --- <br /> table-would leave hydrocarbons_in the present unsaturated zone. <br />