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TABLE 2 BLANK SAMPLES AND METHANE STANDARDS RUN FOR SAMPLING <br /> AT CHEVRON PROPERTY 9-0265, LATHROP, CALIFORNIA <br /> BLANK DATA <br /> Peaks Prior <br /> Test to Benzene Benzene <br /> Date Time (ppm) (ppm) <br /> 06/30/88 1845 <2 <0. 1 <br /> 07/05/88 1415 < 1 <0. 1 <br /> METHANE STANDARDS <br /> Test Concentration <br /> Date Time (ppm) <br /> 06/30/88 1850 7 . 7 <br /> 1852 7 . 7 <br /> 07/05/88 1419 7 . 7 <br /> 1422 7. 7 <br /> 1425 7 . 7 <br /> 1429 94.8 <br /> 1431 94 .8 <br /> 1432 94 .8 <br /> c40/90265 <br />