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I TABLE 3 CONCENTRATIONS OF HYDROCARBON CONSTITUENTS IN <br /> WELL HEADSPACE AND SOIL VAPOR SAMPLES AT. . <br /> FORMER EXXON RS 7-1050, 909 W. HAMMER LANE, <br /> STOCKTON CALTFpRNIA 23 24 NOVEMBER 7987 <br /> Peaks <br /> Prior <br /> Sample. Depth Benzeneo Benzene Toluene Total Detected <br /> Location {=t) �p�m)a Hydrocarbons <br /> (ppm)° <br /> Mw1 -------------------- <br /> 20 <br /> MW2 - <1 <T 550 1 ,250<5 <5 <br /> MW3 <br /> MW4 470 150 1 .050 <br /> 3,000 <br /> MWS _ 60 10 700 71500. <br /> V1 <1 < 1 10 20 <br /> 17 <7 <1 <br /> V2 16.5 < i 1 <2 <br /> V3 15.5 C7 < i <1 <br /> ij <br /> V4 17 < 1 <1 < 1 <br /> V5 - 78 < 1. < l < 7 <br /> j V6 23:.5 <1 < 1 5 `"1 0 <br /> < 1 <1 x <br /> BLANK- D11TA <br /> Peaks <br /> Prior to <br /> Test Benzene Benzene Toluene T <br /> Date Time (ppm)a { m) <br /> �..' <br /> 23 Nov <br /> 1908 <br /> 24 Nov 1058 (0. 1 <br /> <0. 7 <00 e <br /> 24 Nov <0.1 <0. 1 <O. i <br /> 14.17 <br /> 24 Nov 161 0 <0. i<0 i 0 1.: <br /> ,. <br /> (0- 1 • s <br /> r. <br /> PERCENTAGE OF STANDARD 'RECOVERED <br /> Date est 'Standard <br /> anda <br /> Time Benzene <br /> �� <br /> T°:luene <br /> _ _ - <br /> 77 <br /> 23 Nov 1421 <br /> 1.00 <br /> 10p24 Nov. 1105 <br /> � - 24. Nov 1314 100 <br /> 100 ; <br /> i� <br /> 90 95 <br /> a• Quantification based onV-secs <br /> . text) . APm ratio for benzene (see <br /> z <br /> a , <br /> e35/71050/2-90/t3 <br /> f � . <br />