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Table 4 <br /> Groundwater Monitoring Results-BTEXlTPH as Gasoline Analyses <br /> Del Monte Disco Property <br /> Stockton,California <br /> Concentration(ug/1) <br /> Sample TPH Ethyl <br /> Well Dale Gasoline Benzene Toluene benzene Xylenes Dilution Lead <br /> TCLP - 500 - - - 5,000 <br /> MCL I LOW 680 1,750 50 <br /> SVE-S BB 12/22/1997 <50 <0.3 <0.3 <0.3 <0.3 NS <br /> 04/16/1998 <50 <0.3 <0.3 <0.3 <0.3 2:1 NS <br /> 02/11/1999 <50 <0.3 <0.3 <0.3 <0.3 1:1 NS <br /> 07/16/1999 <50 <0.3 <0.3 <0.3 <0.3 1:1 NS <br /> 11/08/1999 <50 <0.3 <0.3 <0.3 <0.3 1:1 NS <br /> �. 03/29/2000 <50 <0.3 <0.3 <0.3 <0.3 1:1 NS <br /> All analyses performed by EPA Method 8015/8020 <br /> TCLP: EPA Toxicity Characteristic Leachate Procedure for Identifying Hazardous Waste <br /> MGL: California Maximum Contaminant Level for Drinking Water <br /> <0.5: Below Detection limit of 0.5 ugll <br /> Sample collected by minimum aeration technique <br /> S Shading indicates results above the detection litnit. <br /> i NS: Not Sampled <br /> i <br /> I <br /> I <br /> i <br /> } <br /> l <br /> l <br /> i <br /> Gdata5-00.xs Page 7 of 7 07/05/2000 <br />