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s • • . <br /> Table 1. Summary of Detected Constituents from Extraction System ARCO Station 2133, Stockton <br /> TPH/gas and volatile EPA 625 <br /> organics (pg/1) EPA 624 (purgeable (extractable <br /> EPA Method 8015/8020 organics) (pg/1) organics) (pg/1) <br /> Date TPH as <br /> sampled Benzene Ethylbenzene Toluene Xylenes gas Benzene Ethylbenzene Toluene Xylenes Naphthalene <br /> 4/18/91 590 74 150 290 3,100 <br /> 4/30/91 440 27 160 290 13 <br /> 6/11/91 190 22 120 110 1,300 <br /> 6/26/91 48 3 8 18 23 280 <br /> 7/10/91 30 24 15 22 300 <br /> 7/24/91 37 2 2 19 27 370 <br /> 817/91 35 10 12 19 <50 <br /> 8/21/91 56 3 8 26 47 280 100 <br /> 9/11/91 12 <0 5 2 0 <0 5 <50 <br /> 9/25/91 31 <0 5 12 20 170 <br /> 10/9/91 25 0 6 8 8 15 150 <br /> 10/23/91 24 17 81 15 130 <br /> 11/6/91 14 <0 5 <0 5 2 8 <50 <br /> 1/8/92 67 15 36 100 930 73 13 33 <br /> Date Coppet, Lead, Zinc, <br /> sampled µg/1 Rg/1 pg/1 <br /> 5/18/91 0 021 <0 05 0 12 <br /> 6/26/91 Oil 0 050 024 <br /> 7/24/91 003 0 010 010 <br /> 8/21/91 014 0 079 14 <br /> 9/25/91 0 11 0 057 026 <br /> 10/23/91 058 0 056 042 <br /> 1/8/92 <0 02 <0 002 0 037 1 <br /> 6673 CORRESP,667304 LTR <br />