Laserfiche WebLink
Table 3 Analytical Results for <br /> ARCO Facility 2093, Tracy, California <br /> Monitoring well <br /> number and Concentrations in ug/L <br /> date sampled Benzene Toluene Eth lbenzene X lenes TPH-G (a) <br /> ATR-12 <br /> 10/16/90 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/10/91 <0 5 1 <0 5 <0 5 <0 5 <50 <br /> 4/10/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 7/12/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 9/25/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1/23/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/21/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 7/8/92 <0 5 <0 5 <0 5 <0 5 <50 <br /> 10/7192 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1118/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/14/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 8/31/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 10/27/93 <0 5 <0 5 <0 5 <0 5 <50 <br /> 2/18/94 04 05 <0 3 <0 5 <10 <br /> 5/20/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 10/7/94(h) <br /> 12/16/94(h) <br /> 2128/95 (h) <br /> 4/26/95 (h) <br /> 7/27/95 (h) -- -- -- -- __ <br /> SMW-1 <br /> 10/7/94 250 110 <0 5 360 2200 <br /> 12/16/94 740 210 330 600 5200 <br /> 2/28/95 1000 330 450 790 8300 <br /> 4/26195 470 110 270 480 5100 <br /> 7/27/95 410 42 360 630 7400 <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 fingcrpnnt <br /> (g) Not sampled Well was inaccessible due to on-site construction activities <br /> (h) Unable to open well box lid <br /> Note dashes indicate not analyzed or not taken <br />