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TANK CLOSURE REPORT—BEACON STATION #494 -2- <br /> 2185 East Fremont Street, Stockton, CA <br /> AMV Project No 19005 04 <br /> i <br /> J <br /> Six soil samples were collected for analysis from the underground storage tank basin. Sample <br /> Jlocations are illustrated on Figure 3 Soil samples were collected from locations approximately <br /> 2 feet beneath each end of the underground storage tanks The soil samples were analyzed for <br /> concentrations of benzene, toluene, ethylbenzene, total xylenes (BTEX), total petroleum <br /> hydrocarbons as gasoline (TPHg), total lead, and ethylene dibromide (EDB) <br /> Of the six soil samples collected from beneath the tanks, five�did not contain measurable <br /> amounts of TPHg, and the sixth soil sample contained TPHg at less than 1 milligram per <br /> _ kilogram (mg/kg) None of the six samples contained measurable amounts of benzene or EDB, <br /> and the highest concentration of total lead was 7.5 mg/kg Analytical results of soil samples <br /> collected from the former tank balm are compiled in Table 1 Copies of certified analytical <br /> reports are contained in Appendix A. <br /> TABLE 1 <br /> TANK BASIN SOIL SAMPLE ANALYTICAL RESULTS <br /> MARCH 8, 1993 <br /> Concentrations in milligram tkilogram mg/kg <br /> Sample Total Total <br /> Location Benzene Toluene Ethylbenzene Xylenes TPHg' EDBb Lead <br /> Tank 1, East <0 0050 <00050 <0 0050 <0 0050 <0 50 <0 010 60 <br /> Tank 1, West <00050 <0 0050 <00050 <00050 <0 50 <0 010 1 6 0 <br /> Tank 2, East <0 0050 <0 0050 <0 0050 /00061 <0 50 <0 010 66 <br /> Tank 2, West <0 0050 <0 0050 <0 0050 <0 0050 <0 50 <0 010 75 <br /> Tank 3, East <0 0050 <0 0050 <0 0050 <0 0050 <0 50 <0 010 60 <br /> Tank 3, West <0 0050 <0 0050 / 00056 /0046 /092 <0 010 68 <br /> 'TPHg total petroleum hydrocarbons as gasoline <br /> = bEDB = ethylene dibronude <br />