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Ground Zero Analysis, Inc. <br /> 1714 Main Street <br /> Escalon, CA 95320 <br /> Proj. ID:95-015 Blank 1 QC Data Date Analyzed: 08/31/01 <br /> Site:Valley VW <br /> Method:8015M 18020A <br /> Lab ID: OLKBO831 <br /> Sample ID: Blank <br /> Matrix: Water <br /> Total Petroleum Hydrocarbons <br /> @ Gasoline <50 <br /> Benzene <0.5 <br /> Toluene <0.5 <br /> Xylenes <0.5 <br /> Ethyl Benzene <0.5 <br /> . QA/QC: <br /> Surrogate Spike Recovery: 108% <br /> Trifluorotoluene <br /> Matrix Spike Recovery Summary <br /> Percent Recovery <br /> Lab lD Client ID Analyte MS!MSD %RPD <br /> B08641 2915C-WW Ethyl Benzene 99 1 97 2 <br /> Laboratory Control Spike <br /> Lab ID Analyte Percent Recovery <br /> LCS0831C Ethyl Benzene 90 <br /> Note:Water samples are reported in ug1L;soil and sludge samples in mglkg. <br /> 3037 Fifth St., Ceres, CA 95307 0 Phone: (209) 581-9280 • Fax: (209) 581-9282 <br /> I <br />