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• • • <br /> Table 1. Summary of Laboratory Analysis From Extraction System, <br /> ARCO Facility 2133, Stockton <br /> Volatile organics, pg/l EPA Method <br /> EPA Method 80I5/8020/602 4181 Other constituents, mg/l <br /> Date pH (field Petroleum <br /> sampled measurement) Benzene Toluene Ethylbenzene Xylenes TPH-Gas oil, mgll Cadmium Chromium Copper Nickel Zinc Lead <br /> 7111195 7 0 27 29 22 53 630 <10 <0 010 <0 010 <0010 <0 025 0 030 <0 050 <br /> I <br /> I <br />