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Table 4 <br /> Groundwater Monitoring Results-BTEX/TPH as Gasolene Analyses <br /> Del Monte Disco Property <br /> Stockton,California <br /> Concentration(ug/1) <br /> Sample TPH Ethyl <br /> h Well Date Gasoline Benzene Toluene benzene Xylenes Dilution Lead <br /> TCLP - 500 - - - 5,000 <br /> MCL - 1 1,000 680 1,750 50 <br /> SVE-S BB 12/22/1997 <50 <0.3 <0.3 <0.3 1 <0.3 NA <br /> 04/16/1998 <50 <0.3 <0.3 <0.3 <0.3 2:1 NA <br /> 0211111999 <50 <0.3 <0.3 <0.3 <0.3 1:1 NA <br /> 07/16/1999 <50 <0.3 <0.3 <0.3 <0.3 1:1 NA <br /> 11/08/1999 <50 1 <0.3 <0.3 1 <0.3 1 <0.3 1 1:1 1 NA <br /> All analyses performed by EPA Method 8015/8020 <br /> TCLP: EPA Toxicity Characteristic Leachate Procedure for Identifying Hazardous Waste <br /> MCL: California Maximum Contaminant Level for Drinking Water <br /> <0.5: Below Detection limit of 0.5 ug/l <br /> * Sample collected by minimum aeration technique <br /> ' Shading indicates results above the detection limit. <br /> INA: Not Analyzed <br /> i <br /> I <br /> � I <br /> I it <br /> 1 <br /> { <br /> e <br /> I <br /> i <br /> Gdotol-00.xos Page 7 of 7 01/20/2000 <br />