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1 <br /> I <br /> Table 1. Summary of Detected Constituents From Extraction System, ARCO Station 2133, Stockton <br /> EPA 625 <br /> TPH/gas and volatile organics, pg/L (extractable <br /> EPA Method 8015/8020 EPA 624 (purgeable organics), pg/1 organics),#g/l <br /> Date TPH as Copper, Lead, Zinc, <br /> sampled Benzene Ethylbenzene Toluene Xylenes gas Benzene Ethylbenzene Toluene Xylenes Naphthalene mg/l mg/1 mg/l <br /> 4/18/91 590 74 150 290 3,100 0 021 <0 05 0 12 <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 2 4 15 22 300 <br /> 7/24/91 37 2 2 19 27 370 ; 0 03 0 010 0 10 <br /> 817/91 35 10 12 19 <50 <br /> 8/21/91 56 38 26 47 280 # t 0 14 0 079 14 <br /> 9/11/91 12 <0 5 20 <0 5 <50 , <br /> 9/25/91 31 0 5 12 20 170 Oil 0 057 026 <br /> 10/9/91 25 0 6 88 15 150 <br /> 10/23/91 24 17 81 15 130 ; 058 0 056 042 <br /> 11/6/91 14 <05 <0 5 2 8 <50 <br /> 1/8/92 67 15 36 100 930 73 13 33 100 <1 6 <0 02 <0 002 0 037 <br /> 1/22/92 74 11 27 71 840 <br /> 2/12/92 15 <05 0 9 <0 5 <50 <0 02 0 027 006 <br /> 2/26/92 32 17 38 110 1,300 <br /> 3/11/92 100 5 5 35 160 1,600 001 <0 05 003 <br /> 3/25/92 100 17 47 140 1,300 <br /> 4/8/92 92 22 65 140 1,500 # 00073 <0 025 0 023 <br /> 4/22/92 97 13 48 110 1,000 <br /> 6/1/92a <0 3 <03 <0 3 <0 3 <30 <br /> 6/10/92 75 8 0 24 56 560 0 019 <0 005 0 032 <br /> 6/24/92 100 9 4 33 100 940 <0 01 <br /> 7/8192 32 0 8 32 33 380 <0 1 0 023 <br /> 7/22/92 22 <0 50 4 3 14 180 <br /> 8112/92 094 0 54 <0 50 12 170 <0 010 <0 10 0 18 <br /> 8/26192 86 0 44 11 95 150 <br /> 9/9/92 25 t3 23 95 160 <0 010 <0 10 0 039 <br /> 9/23/92 078 0 5 <0 5 3 4 100 3 <br /> 10/14/92 <0 5 <05 <0 5 <0 5 <.50 0 048 <0 10 17 <br /> 10/31/92 20 2 0 3 6 19 260 <br /> 11/11/92 096 12 <0 5 12 160 0 011 <0 005 0 049 <br /> 11/25/92 074 14 <0 5 16 170 <br /> 12/16/92 <0 5 2 1 0 53 48 650 <0 01 <0 005 0 016 <br /> 12/30/92 <0 5 15 057 65 700 <br /> 1/13193 5 7 2 3 088 73 760 0 011 <0 1 <0 01 <br /> 'Sample was collected within 1/2-hour of system start-up and is most likely not a representative sample <br /> 745MORRFSPATAB-1.2 <br />