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TABLE 5 (Cont. ) CONCEN'T'RATIONS OF HYDROCARBON CONSTITUENTS IN SOIL VAPOR AT EXXON F--P.MU RS 7-1050, <br /> 909 W. HALER LANE, STIOCKMN, CALIFORNIA, 22 DECEMBER 1987 _ <br /> Total <br /> Volatile <br /> Peaks Prior Ethyl-- Hydro- <br /> Sample Depth to Benzenea Benzene Toluene o-Xylene m,p-Xylene benzene PNOIb carbon <br /> Location ( ft) (ppm)c (Ppm) (Ppm) (ppm) (ppm) (ppm) fr)c_ (pprn) <br /> V]/A 3.0 <5 < 1 <1 < 1 <1 <1 <1 <5 <br /> V7/B 5.5 <5 <1 < 1 <1 < 1 <1 <1 <5 <br /> V8/A 3.0 5 <1 <1 <1 <1 <1 <1 5 <br /> V8/B 5.5 5-10 <1 <1 < 1 < 1 < 1 <1 <10 <br /> V9/A 3.0 <5 <1 < 1 <1 <1 <1 <1 5 <br /> V9/B 5.5 <5 <1 <1 < 1 <1 <1 <1 <5 <br /> V10 3.0 <5 <1 <1 <1 <1 <1 <1 5 <br /> V11 3.0 <5 < 1 <1 <1 < 1 <1 <1 <5 <br /> BLANK DATA <br /> Volatile <br /> Peaks Prior Ethyl- b Hydro- <br /> to Benzene Benzene Toluene o-Xylene m,p--Xylene benzene PNOI carbons <br /> Test Time (ppm)c (PET)_ (PPT) (ppm) (ppm) _(ppm) (PP�r )c (ppm) <br /> 1120 <0.5 <0 1 <0 1 <0. 1 <0. 1 <0 1 <0 5 <1 <br /> 1234 <1 <0. 1 <0 1 <0. 1 <0. 1 <0 1 <0.5 <1 <br /> PERCENTAGE OF SPANDARD RECOVERED <br /> Ethyl- <br /> Benzene Toluene o-Xylene m,p-Xylene benzene <br /> Test Time (ppm) (ppm) (ppm) f m) (ppm) <br /> 1153 100 100 100 100 100 <br /> 1255 99 88 63 61 66 <br /> 1325 96 83 51 54 58 <br /> as Peaks from blank data subtracted from, total peaks prior to benzene <br /> b Peaks not otherwise identified. <br /> c Quantification based on %-sec ppm ratio for benzene ( see te/t) <br /> e25 7105018-89,tbl5 <br />