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l � <br /> Y <br /> a <br /> 470 <br /> ci <br /> Table 1. Summary of Detected Constituents from Extraction System ARCO Station 2133,5t.,cktun <br /> EPA 625 .'. <br /> TPH/gas and volatile EPA 624 (purgeable (extractahir 1. <br /> lz <br /> organics(µg/1) organics)(µg/1) organics) t11g/I1 <br /> Date TPH as <br /> sampled Benzene Ethylbenzene Toluene Xylenes gas Benzene Ethylbenzene Toluene Xylenes Naphthalene x <br /> 4/30190 <br /> 4/I8/91 590 74 150 290 3,110 <br /> 4/30/91 440 27 160 290 13 R <br /> 6/11/91 190 22 120 110 000 3. <br /> 6/26/91 48 3.8 18 23 280 <br /> 7110/91 30 2.4 15 22 300 :a <br /> 7/24/91 37 2.2 19 27 370 <br /> 3/7/91 35 1.0 12 19 <50 ' <br /> Date } <br /> sampled Copper Lead Zinc <br /> 51101 0.021 <0.05 0.12 <br /> 6/26/91 0.21 0.050 0.24 y <br /> 7/24/91 0.03 0.010 0.10 , <br /> x 3 <br /> Jill <br /> �t <br /> r <br /> (k! <br /> ! <br /> a <br />