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3 <br /> Tattle 1. Analytical Results of G:oundwater Samples Collected at <br /> ARCO Station 2133, Stockton, Calirornia (continued) <br /> Aromatic volatile organics (BETX), ug/1 <br /> Sample Date Ethyl- <br /> Number San led Benzene benzene Toluene Xylene <br /> 680 100 (b) 1750 <br /> MCL(a) <br /> 318!90 38.9 2.2 3.4 15.3 <br /> E-9 8/26/88 4,700 1,400 4,900 5,100 <br /> 11/28/88 780 400 1,100 1,280 <br /> 2/28/89 900 260 100 1,700 <br /> 5130189 - - -" <br /> 8!23189 690 :500 <500 860 <br /> 1214/89 <br /> 318190 490 360 70 1,440 <br /> E-10 8126/88 -- -- <br /> 11/29/88 2,780 690 5,240 3,570 <br /> 2/26189 2,970 750 3,020 5,030 +� <br /> 5131189 5,520 1,060 5,760 6,900 <br /> 8/24189 2,590 570 3,220 5,200 <br /> 1215189 1,300 400 1,200 3,200 <br /> 3/8190 339 268 606 1,480 <br /> E-11 8/26/88 <br /> 11/29/88 440 110 380 460 <br /> 2/20189 400 120 250 823 <br /> 5131189 437 97 162 281 <br /> 8123189 160 36 36 220 <br /> 12/5189 240 38 2G 290 <br /> 318190 80.1 75.6 31.3 242 <br /> E-12 8126188 -- -- -' <br /> 11/29/88 80.0 8.0 30.0 35;0 <br /> 2128189 121 2.2 3.4 36 <br /> 5130189 38.4 1.5 1.9 13,1 <br /> 8123189 I50 2.3 2.2 12.6 <br /> 1214189 250 <0.3 54 91 <br /> 318/90 91.7 3.0 16.4 14.5 <br /> (a) Department of Health Services (DHS) Maximum Contaminant Levels (MCLs) <br /> (h) Department of Health Services (DHS) Action Level (MCL not established for toluene) <br />