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TABLE 5 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 CALIFORNIA 23 24 NOVEMBER 1987 <br /> Peaks <br /> Prior to Total Detected <br /> Sample Depth Benzene Benzene Toluene Hydrocarbons <br /> f Location (ft) {gym_}a ,{ippm) _(Ppm) y(p m)a <br /> MWI _ 20 <1 550 1 ,250 <br /> < 1 <1 <5 <5 <br /> MW3 - 410 150 1 ,054 3,000 <br /> 60 <br /> MW4 700 . 1 ,500 <br /> MW5 _ �� 10 20 <br /> # V1 17 <1 < T 1 <br /> V2 T6.5 <2 <br /> - <1 <1 <1 < 1 <br /> V3 15.5 <1 <1 <T <br /> V4 17 < 1 <1 <T < 1 <br /> < 1 <br /> i` V5 Tg c1 < 1 S <10 <br /> V6 23.5 <1 <i <1 < 1 <br /> BLANK DATA <br /> I a Peaks <br /> Prior to <br /> Test Benzene Benzene Toluene <br /> ' Date Time -�Pm)� _(ppm} ( m} <br /> J �pp I <br /> 23 Nov 1408 <0. 1 <0. 1 <0. 1 . <br /> i� 29 Nov 1058 <0. 1 <0. 1 <0. 1 <br /> 24 Nov 1417 <0. 1 <br /> 24 Nov 1610 <0. 1 <0. 1 <0. 1 <br /> u <br /> PERCENTAGE OF STANDARD RECOVERED <br /> Lj <br /> Test_. _._.Standard .. <br /> -T Date'` Time Benzene - Toluene <br /> 1421 <br /> 23 Nov 100 - 100 <br /> E <br /> 24 Nav . <br /> .1105 100 100 <br /> } 24 Nov 1314 90 <br /> r s 95 <br /> a. Quantification based on V-sec; <br /> ppm ratio for benzene. <br /> e42/71050/7-90/t5 <br /> �: <br /> f <br /> y� s <br />