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act©� %boratories <br /> GROUND ZERO ANALYSIS, INC <br /> 1714 Main Street <br /> Escalon,CA 95320 <br /> ' Prol 1D 329 Blank I QC Data Date Analyzed 03/15/01 <br /> Site Knowles Roek <br /> Method 8015M/8020A <br /> ' Lab ID Blank <br /> Sample ID BLKB0315 <br /> ' Matrix Water <br /> Total Petroleum Hydrocarbons <50 <br /> @ Gasoline <br /> Benzene <0 5 <br /> ' Toluene <0 5 <br /> Xylenes <0 5 <br /> Ethyl Benzene <0 5 <br /> �i TQC <br /> Surrogate Spike Recovery 104% <br /> Matrix Spike Recovery <br /> P ry Summary <br /> Percent Recovery <br /> ' Lab ID Client ID Analyte MS I MSD %RPD <br /> ' B03141 S131-W Gas 116 1 112 4 <br /> 1 <br /> Laboratory Control Spike <br /> Lab 1D Analyte Percent Recovery <br /> ry <br /> ' LCS0315C <br /> Gas 126 <br /> *water samples are reported in ug/L sod and sludge samples to mg/kg <br /> 1 <br /> 3037 Fikh 5t, Ceres, CA 95307 0 Phone (209) 581-9280 • Fax (209) 581-9282 <br />