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TABLE 2 <br /> HISTORICAL AND RECENT GRAB GROUNDWATER ANALYTICAL RESULTSI <br /> Ridgeway(formerly Burns) Property <br /> 1881 Rustan Road <br /> Tracy, California <br /> Concentrations in micrograms per liter(µg/1) <br /> TPHd TPHd <br /> Sample (without silica (with silica gel Ethyl- <br /> Sample ID Date TPHg gel procedure) procedure) Benzene Toluene benzene Xylenes MTBE PAHs <br /> GMX-I2-GGW 9/23/99 NA NA NA <0.5 <0.5 <0.5 <0.5 <1 Acn 0.1 <br /> Flr 0.3 <br /> GMX-23-GGW 5/16/00 <50 <50 1272 <0.5 <0.5 <0.5 <0.5 NA <0.1 <br /> GMX-24-GGW 5/16/00 <50 63 1082 <0.5 <0.5 <0.5 <0.5 NA <0.1 <br /> GMX-28-GGW 10/12/00 <50 620/3803 100 <0.5 0.7 <0.5 1.5 NA Flr 0.3 <br /> Phn 0.2 <br /> Notes: <br /> ' Samples collected by Geomatrix Consultants,Inc. and analyzed by Friedman and Bruya,Inc.for total petroleum hydrocarbons(TPH)quantified as <br /> gasoline(TPHg), and TPH quantified as diesel(TPHd)using EPA Method 8015 Modified;benzene,toluene,ethylbenzene, and total xylenes <br /> (BTEX)and methyl tertiary butyl ether(MTBE)using EPA Method by 826013;and for polynuclear aromatic hydrocarbons(PAHs)using EPA <br /> Method 8270SIM. Only detected PAHs shown here.TPHd analysis was performed both with and without a silica gel preparation procedure on <br /> sample extracts(EPA Method 3630)prior to analysis. <br /> 2 The analyte reported was also detected in the Method Blank at a concentration of 116µg/1 and the analytical laboratory reported that <br /> the detection is likely due to laboratory contamination. <br /> 3 Unfiltered/filtered sample result. The filtered sample was passed through a 0.7-micron glass fiber filter by the laboratory prior to extraction <br /> and analysis. <br /> Abbreviations: <br /> NA=Not Analyzed Flr=Fluorene <br /> Acn=Acenapthene Phn=Phenanthrene <br /> is\doe_safe\6000s\6115.007\dec2000report\table 1-2-3.x1s <br />