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5 <br /> Table 3. Analytical Results for <br /> ARCO Facility 2093, Tracy, California <br /> Monitoring well Concentrations in L <br /> number and Methyl <br /> date sampled Benzene Toluene lath lbenzene Xylenes TPH-G (a) Tert-Butyl Ether <br /> 2/12/96 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 4/18/96 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 7/18/96 <0 5 <0 5 <0 5 <0 5 <50 <5 <br /> SMW-1 <br /> 1017/94 250 110 <0 5 360 2200 -- <br /> 12/16/94 740 210 330 600 5200 -- <br /> 2/28/95 1000 330 450 790 8300 -- <br /> 4/26/95 470 110 270 480 5100 -- <br /> 7/27/95 410 42 360 630 7400 -- <br /> 10/27/95 640 33 440 410 7600 -- <br /> 2/12/96 390 <0 5 220 98 3800 4/18/96 60 <0 5 20 74 500 -- <br /> 7/18/96 200 <5 130 56 3400 60 <br /> TEX-1 <br /> 10/26/95 <5 (e) <0 5 <0 5 <0 5 <350(g) <br /> 2/12/960) <br />. <br /> 4/18/96 <0 5 <0 5 <0 5 <0 5 <50 == <br /> 7/18/96(l) <br /> (a)Total petroleum hydrocarbons as gasoline <br /> (b) Well could not be located due to recent parking lot repaving <br /> (c) Well is on a semi-annual sampling schedule <br /> (d)Not sampled due to presence of free product <br /> (e)Raised method reporting limit due to high analyte concentration requiring sample dilution <br /> (f)The chromatogram does not match the typical gasoline fingerprint <br /> (g) Raised method reporting limit due to matrix interference <br /> (h)Not sampled Well was inaccessible, due to on-site construction activities <br /> (i) Unable to open well box lid <br /> 0) Soil vapor extraction well -not sampled <br /> Note dashes indicate not analyzed or sample not collected <br /> 33151TABLESM93AUG6 XLS <br />