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Table 3 Analytical Results,ARCO Facility 2133, <br /> Stockton, California <br /> Monitoring well <br /> number and Concentrations m uo/I <br /> date sampled Benzene Toluene Eth (benzene Xylenes TPH-G(a) <br /> 7/16/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 10/9/91 -- -- <br /> 1122192 -- _- _- -_ _. <br /> 4/22192 <0 5 <0 5 <0 5 <0 5 <50 <br /> 7/29/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 10/29/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1127193 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4129193 <0 5 <0 5 <0 5 <0 5 <50 <br /> 8/5193 <0 5 <0 5 <0 5 <0 5 <50 <br /> 11/9/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 3/21/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 6/27/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 9/29/94 <0 5 <0 5 <0 5 <0.5 <50 <br /> MW-1 <br /> 11/9/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 3/21/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 6/27/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 9/29/94 <0 5 <0 5 <0 5 <0 5 <50 <br /> NI W-2 <br /> 11/9/93 67 72 6 6 120 950 <br /> 3/21/94 100 62 16 83 450 <br /> 6/27/94 55 13 9 6 72 390 <br /> 9/29/94 (f) -- -- -- -- <br /> (a)TPH-G=TPH as gasoline <br /> (b)'Unknowii hydrocarbon - most likely weathered gasoline <br /> v (c)Raised reporting limit due to matrix interference <br /> (d) Raised reporting limit due to high analyte concentration requiring sample dilution <br /> (e) Xylenes were incorrectly reported in the second quarter 1994 quarterly report <br /> Data shown herein is correct <br /> (f) Well not sampled because it was covLred by soil pile <br /> Note Dash indicates not measured or not analyzed <br />