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Table 1. Summary of Detected Constituents From Extraction System ARCO Station 2133, Stockton <br /> EPA 625 <br /> TPI /gas and volatile organics, }ig/l (extractable <br /> EPA Method 8015/8020 EPA 624 (purgeable orgacmcs, pg/i orgamcs, pg/1 <br /> Date TPH as I Copper, Lead, Zinc, <br /> sampledhthalene mg/l mg/1 mg/1 <br /> Benzene Ethylbenzene Toluene Xylenes gas Benzene Ethylbenzene Toluene Xylenes Nap <br /> 4/18/91 590 74 150 290 3,100 0 021 <0 05 012 <br /> 4/30/91 440 27 160 290 13 <br /> 6/11/91 190 22 120 110 1,300 <br /> 6/26/91 48 38 18 23 280 Oil 0 050 024 <br /> 7/10/91 30 24 15 22 300 1 <br /> 7/24/91 37 22 19 27 370 � 0 03 0 010 010 <br /> I <br /> 8!7/91 35 10 12 19 X50 <br /> 8/21/91 56 38 26 47 280 0 14 0 079 1 4 <br /> 9/11/91 12 <0 5 20 <0 5 <50 <br /> 9/25/91 31 05 12 20 170 Oil 0 057 026 <br /> 10/9/91 25 06 88 15 150 ' <br /> 10/23/91 24 17 81 15 130 058 0 056 042 <br /> 11/6/91 14 <0 5 <0 5 28 X50 <br /> 1/8/92 67 15 36 100 - 930 73 13 33 100 <16 <0 02 <0 002 0 037 <br /> 1/2.2/92 74 11 27 71 840 <br />. 2/12/'92 15 <0 5 09 <0 5 <50 <0 02 0 027 006 <br /> �i <br /> I <br /> s <br /> 6673SCORRESP%TABLE 1 <br />