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1 <br /> 1 <br /> auTo� laboratories <br /> Ground Zero Analysts <br /> 1714 Main Street <br /> Escalon,CA 95320 <br /> Blank f QC Data Date Analyzed 02/25/02 <br /> 1 Prol ID 186 <br /> Site Knowles Roek Method 8015M 18021 B <br /> 1 Lab ID BLKD0225 Method <br /> Sample ID Blank Rep Lim <br /> Matrix Water ugIL <br /> I <br /> Total Petroleum Hydrocarbons <br /> I@ Gasoline <50 50 <br /> Benzene <05 0 5 <br /> ' Toluene <0 5 0 5 <br /> Xylenes <1 0 10 <br /> ' Ethyl Benzene <05 05 <br /> QA/QC <br /> Surrogate Spike Recovery 95% <br /> Trdluorotoluene <br /> 1 <br /> Matrix Spike Recovery Summary <br /> Percent Recovery <br /> LablD Client ID Analyte MS 1 MSD %RPD <br /> I <br /> D02286 KRMW-7 Gas 115 1 113 2 <br /> 1 <br /> Laboratory Control Spike <br /> Lab ID Analyte Percent Recovery <br /> LCS0225D MTBE 83 <br /> . Note Water samples are reported inµg/L soil and sludge samples in mg/kg <br /> ' 3037 Fifth St , Ceres, CA 95307 • Phone (209)581-9280 • Fax (209) 581-9282 <br /> i <br />