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r <br /> TABLE 3 CONCENTRATIONS OF HYDROCARBON CONSTITUENTS IN SOIL <br /> VAPOR AT EXXON RS 7--1050, 909 W. HAMMER LANE, <br /> STOCKTON, CALIFORNIA, 23, 24 NOVEMBER 1987 <br /> Peaks <br /> Prior to Total Detected <br /> s. Sample Depth Benzeng Benzene Toluene Hydrocar ons <br /> Location (ft) (ppm) m) <br /> (ppm) <br /> MWl - 20 <1 550 1,250 <br /> MW2 _ <1 <1 <5 <5 <br /> 410 150 1,050 3,000 <br /> MW4 - 60 10 700 1,500 <br /> MW5 <i <1 IO 20 <br /> Vi 17 <1 <1 i <2 <br /> V2 16.5 <1 <1 <1 <1 <br /> V3 15.5 <i <1 <1 <1 <br /> V4 17 <1 <1 <1 <1 <br /> i V5 ZS <1 <1 5 <10 <br /> V6 23.5 <1 <1 <1 <1 z <br /> f. <br /> BLANK DATA <br /> Peaks _ <br /> 1 Prior to <br /> 9Test Benzen Benzene- Toluene ! <br /> Date Time (Ppm) (E 0)— ( m) 2 <br /> y Z <br /> 23 Nov 1408 <0.1 <0.I <0.1 <br /> 24 Nov 1058 <0.1 <0.1 <0.1 <br /> 24 Nov 1417 <0.1 <0.1 <0.1 <br /> 24 Ncv 1610 <0.1 <0.1 <0.1 f <br /> PERCENTAGE OF STANDARD RECOVERED <br /> i <br /> Test Standard <br /> Date. Time Benzene Toluene <br /> 23 Nov 1421 100 100 <br /> 24 Nov 1105 100 100 <br /> 24 Nov 1314 90 <br /> 95 <br /> ia. <br /> i <br /> f , <br /> cTuantification based on vsec:ppm ratio for benzene (see <br /> text) <br /> 44 <br /> r-- <br /> a <br /> j' EXX9:84I, <br /> f; <br />