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TABLE 2 CCACENTRAT,IONS OF HYDROCARBON CONSTITUENTS IN SOIL <br /> V12OR AT CHEVRON SERVICE STATION 9-6465, PERSHING <br /> AT ROBINHOOD, STOCKTON, CALIFORNIAL 19 NOVEMBER 1987 <br /> Peaks <br /> Prior to Totp.1 Detected <br /> Sample Depth Benzeng Benzene Toluene Hydrocarbons <br /> Location (ft) {ppm} (ppm) , (ppm) — (22m) <br /> t4W1 (well) 3,700 60 280 40,000 <br /> MW2 (well) 150 280 80 2,000 <br /> MW3 (well) 1,400 60 100 2,600 <br /> V1 3 50 20 20 210 <br /> V1/B 5 30 10--15 10 110 <br /> V1/C 8 <1 <1 <1 <1 <br /> Vl/D 10 <5 <5 <1 10 <br /> - <1' cl G1 <1 <br /> <1 <1 <1 <1 <br /> V4 3 <1 <1 <1 <1 <br /> V5 3 <5 <5 <1 20 <br /> V5/B 5 <2 1 1 <10 <br /> V5/C 8 <1 <1 <1 <1 <br /> V5/D 10 <1 <1 <1 <1 <br /> V6 3 10 <5 <5 30 <br /> V6/B 6.5 <1 <1 <1 <1 <br /> V7 3 50 100 70 500 <br /> _.. V7/B 8 <1 <1 <1 <1 <br /> V8 3 80 40 30 300 <br /> V8/B 6.5 <5 <5 5 10 <br /> V9 0.5 70 10 50 200 <br /> V10 0.5 10 <1 20 30 <br /> Vil 3 5-10 5 5 30-40 <br /> V12 3 <5 <5 1 10-20 <br /> a. Relative to benzene standard. <br /> x3LANK DATA <br /> Peaks <br /> Prior to <br /> Test Benzeng Benzene Toluene <br /> Time (ppm) (ppm) (ppm) <br /> 1102 <0.1 <0.1 <0.1 <br /> PEPCENTAGE OF STANDARD RECOVERED <br /> Test Standard <br /> Time Benzene Toluene <br /> 1135 100 106 <br /> 1633 78 77 <br />