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I <br /> lei TABLE 2-4 <br /> SUMMARY OF FREQUENCY OF DETECTION OF SOIL DATA' <br /> CALTRANS SHOP 90 <br /> S'TOCKTON, CALIFORNIA <br /> Analyte Number of Samples Number of Detects Frequency <br /> TPH-g 242 44 182 <br /> TPH-d 76 3 39 <br /> Benzene 242 65 269 <br /> Eth (benzene 242 fib 281 <br /> Toluene 242 60 248 <br /> X lene 242 69 285 <br /> ' Soil data collected from 1987 to 1996 <br /> I to <br /> r� <br /> Page 1 tab242/8/99 <br />