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r� <br /> Table 1. Summary of Detected Constituents from Extraction System ARCO Station 2133, Stockton <br /> EPA 625 r� <br /> TPH/gas and volatile EPA 624 (purgeable <br /> (extractable i <br /> organics (pg/1) organics) (pg/1) organics) (pgA) t <br /> mate TPH as <br /> Sampled Benzene Ethylbenzene Toluene Xylenes gas Benzene Ethylbenzene Toluene Xylenes Naphthalene <br /> 4/30/90 <br /> 4/18/91 590 74 150 290 3,100 <br /> 440 27 160 290 [3 <br /> 4/30/91 190 22 120 110 1 300 ;y <br /> 6/11/91 48 3.8 18 23 X280 x£ ' <br /> 6126191 30 2.4 15 22 300 <br /> 37 2.2 19 27 370 <br /> 7/10/91 35 1.0 12 19 <50 <br /> 7/24191 56 3.8 26 47 280 <br /> 12 <0.5 2.0 <0.5 <50 <br /> 8/7/91 31 <0.5 12 20 170 <br /> 8/21191 25 0.6 8.8 15 150 t <br /> 9/11/91 <br /> 9/25191 . " .d <br /> 10/9191 <br /> 10/23/91 24 1.7 8.1 15 130 <br /> 11/6/91 1.4 <0.5 <0.5 2.8 <50 Y a <br /> .i <br /> Date <br /> sampled Copper Lead Zinc , <br /> 5/18191 0.021 <0.05 0.12 <br /> 6/26/91 0.11 0.050 0.24 <br /> 7/24/91 0.03 0.010 0.10 v <br /> 8/21191 0.14 0.079 1.4 <br /> 9/25/91 0.11 0.057 0.26 <br /> 10/23/91 0.58 0.056 0.42 `c <br /> I <br /> scoarcoRx�st�ts6eoo3.i J J�� <br /> li <br /> I� <br />