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v <br />Ground Zero Analysis, Inc. <br />1714 Main Street <br />Escalon, CA 95320 <br />Proj. ID: Blank/ QC Data Date Analyzed: 09/18/01 <br />Site: Thorpe Souza II <br />Method: 8015M / 8020A <br />Lab ID: <br />BLKBO918 <br />Sample ID: <br />Blank <br />Matrix: <br />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: 107% <br />TriFluomtoluene <br />Matrix Spike Recovery Summary <br />Percent Recovery <br />Lab ID Client ID Analyte MS / MSD %RPD <br />809142 TSG-AS1-10.5' Gas 88 / 75 16 <br />Laboratory Control Spike <br />Lab ID Analyte Percent Recovery <br />LCS0918C Gas 108 <br />Note: Water samples are reported in ug/L; soil and sludge samples in mglkg. <br />3037 Fifth St., Ceres, CA 95307 • Phone: (209) 581.9280 0 Fax: (209) 581-9282 <br />