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i <br /> Table 4 <br /> Groundwater Monitoring Results-BTEXITPH as Gasoline Analyses <br /> Del Monte Disco Property <br /> i <br /> Stockton,California <br /> Concentralion(u ) <br /> Sample TPH Ethyl <br /> Well Date Gasoline Benzene Toluene benzene Xylenes Dilulion Lead <br /> TCLP 500 - - 5,000 <br /> MCL 1 1,000 680 1,750 50 <br /> SVE-SOUTH 04/17/1997 1:1000 NS <br /> ' 08/12/1998 NS <br /> 1212211997 NS <br /> 0411611998 . 1:500 NS <br /> 07/23/1998 1:200 NS <br /> 11/1111998 1:400atl:2000b NS <br /> 0111/1999 1:2000 NS <br /> 07/1611999 1:200 NS <br /> 11/08/1999 1:40a/1:200b NS <br /> 03/29/2900 1:200a/1:400b NS <br /> 06/28/2000 NS NS NS NS NS_ NS <br /> 11/161'-006 1:100 NS <br /> SVE-S BB 12/2211997 <.50 <0.3 <0.3 <0.3 <0.3 NS <br /> 04/1611998 <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 <03 1:1 NS <br /> 11/08/1999 <50 <0.3 <0.3 <0.3 <0.3 LI NS <br /> 03/29/2000 <50 <0.3 1 <0.3 <0.3 <0.3 1:1 NS <br /> I <br /> All analyses performed by EPA Method 8015/8020 <br /> ` LP: 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 ug11 <br /> " Sample collected by minimum aeration technique <br /> ** Samples collected but not analyzed due to lab error. <br /> Shading indicates results above the detection limit. <br /> NS: Not Sampled <br /> t <br /> 1 <br /> 1 <br /> I <br /> I <br /> i <br /> 1 <br /> i . <br /> I <br /> I <br /> Gdato I I-00_ko.xts Page 7 of 7 02113r"I <br />