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8 Aire <br /> Table 1. Summary of Detected Constituents from Extraction System ARCO Station 2133, Stockton ` <br /> TPH/gas ae.I volatile FPA 625 �^rF <br /> organics (pg/1) EPA 624 (pur�eable d� <br /> EPA Method 8015/8020 (extractable x.h} <br /> organics)W/1) organics) (1sg/i) E <br /> Date TPH as <br /> Sampled Benzene Ethylbenzene Toluene Xylenes gas Benzene Ethylbenzene Toluene Xylenes Naphiftalene <br /> 4/18/91 590 74 150 290 3,100 ,{ <br /> 4/30/91 440 27 160 290 13 , <br /> 6/11/9I 190 22 120 110 1,300 <br /> 6/26/91 48 3.8 18 23 280 <br /> 7/10/91 30 2.4 15 22 300 <br /> S <br /> . 7/24/91 37 2.2 19 27 370 ., <br /> 8x/91 35 1.0 I2 19 <50 <br /> 8/21/91 55 3.8 26 47 280 100 ' <br /> 9/11/91 12 I <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 1501 <br /> 10/23/91 24 1.7 8.1 15 130 <br /> 11/6/91 1.4 <0.5 <0.5 2.8 <50 <br /> 1/8/92 67 15 36 100 930 73 13 33 <br /> Date Copper, Lead, Zinc, <br /> sampled . ply p1;r3 pgA <br /> 5118/91 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 <br /> 8/21/91 0.14 0.079 1.4 z <br /> 9/25191 0.11 0.057 0.26` SII <br /> 10/23/91 0.58 0.056 0.42 <br /> IB/92 <0.02 <0,002 0.037 ..Pi <br /> 66nC0P.Rrr-P6673 W.LTR <br /> _ N <br />