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TABLE 3 <br /> Vapor Extraction Operating Data <br /> Thrifty Oil Station # 172, Stockton, CA <br /> "our'll�stor inlet l4ydrocarbolls Rets V: <br /> Date Readinrg Duration Plow Rate Lab.Concentratlorls Perloci culntllative Comments <br /> (hm) (hm) $cfrrt ppmv ugPL ids} (lbs} <br /> 3!21102 7 138 168 201 103 130 28 502 <br /> 3!28102 7 304 166 203 508 2 250 1475 28 649 <br /> NOTE Inlet concentration is obtained from laboratory analytical result for Total Petroleum Hydrocarbons(TPH) <br /> and assumed the same until the subsequent sampling <br /> 014tab3 Page 2 of 2 4/11/02 <br />