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Table 1. Summary of Detected Constituents From Extraction System, <br /> ARCO Station 2133, Stockton <br /> TPH/gas and volatile organics, pg/1 <br /> EPA Method 8015/8020 <br /> Date pH (field TPH as <br /> sampled measurement) Benzene Ethylbenzene Toluene Xylenes gas <br /> 6110/93 658 130 20 46 190 1,200 <br /> Volatile organics, pg/l <br /> EPA Method 624 <br /> Date sampled Benzene Ethylbenzene Toluene Xylenes <br /> 6/10/93 100 19 39 180 <br />• <br /> 7452\CORRESP\TABLE 1 <br />