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� tills i�i i __ i _ i i i i J• � i i i i !� i � i <br /> TABLE 5 COMPARISON OF SOIL SAMPLES COLLECTED BEFORE AND AFTER REMEDIATION FORMER EXXON RS 7-0137, 1605 SOUTH EL DORADO STREET,STOCKTON,CA <br /> Concentrations(mg/kg) <br /> Depth * EDB/ <br /> Boring Number Date (ft bgs) Benzene Toluene Ethyl-benzene Total Xylenes TPH-g MTBE - Oxygenates Total Lead 1,2-DCA <br /> SB-140 5 * 02191 351 63 1,300 360 2,000 16,000 NA NA NA NA <br /> SB5-36 ** 08/26/99 360 381 241 198 1,610 14,300 <25 ND NA ND <br /> TKI-N 06/92 160 <0 005 <0 005 <0 005 <0 005 <1 0 NA NA 4 0 <0 002/NA <br /> SB6-l6 08/27/99 160 <0 1 <0 002 <0 002 <0 004 <0 400 <0 005 ND NA ND <br /> TKI-S 06/92 160 11 11 77 550 4,800 NA NA 3 0 0 27/NA <br /> SB7-16 08/27/99 160 <0 002 <0 100 <0 100 0 569 832 <20 ND NA ND <br /> TK2-N 06192 160 <0 005 60 100 830 5,300 NA NA 41 <0 002 <br /> SB5-16 08/26/99 160 <0 002 <0 002 <0 002 <0 004 <0 400 <0 005 ND NA ND <br /> TK3-N 06/92 160 <0 005 130 60 320 4,200 NA NA 5 3 0 002 <br /> S84-16 08/26/99 160 <0 002 <0 002 <0 002 <0 004 <0 400 <0 005 ND NA ND <br /> *=Soil Boring SB-1 was drilled at 30 degrees from vertical Sample depth in feet below ground surface is adjusted accordingly <br /> **= Sample collected from below the groundwater surface The average depth to groundwater across the site on 30 July 1999 was 26 feet Sample was saturated prior to sampling <br /> TPH-g=Total Petroleum Hydrocarbons as gasoline <br /> MTBE=Methyl t-butyl ether by EPA Method 8020 Modified or EPA Method 8021 B,unless otherwise noted <br /> Oxygenate compounds=Tert-amyl methyl ether,tert-butyl alcohol,di-isopropyl ether,ethanol,ethyl cert-butyl ether,methyl tert-butyl ether by EPA Method 8260B <br /> EDB= 1,2-Dlbromoethane <br /> 1,2-DCA= 1,2-Dichloroethane <br /> NA=Not analyzed <br /> ND=Not detected <br /> ft bp=Feet below ground surface <br /> mg/kg=Milligrams per kilogram <br /> R <br /> f%ptojects1701371masietiwp%closureI1001sod xls[cumpanson sample to sampie] Page I of 1 <br />