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1 <br />� 1 <br /> auoo2 laboratories <br /> • Ground Zero Analysis <br /> ' 1714 Main Street Date(s)Sampled 02/19/03 <br /> Escalon,CA 95320 02/21/03 <br /> Date Received 02/19/03 <br /> Pro1 ID 186 TPH-g/BTX&E Date Analyzed 02/25/03 <br /> Site Knowles Roek <br /> Method 8015M 18021 B <br /> ' Lab ID D02293 D02294 D02295 D02296 <br /> ' Sample ID KR MW-15B KR MW-15C KR MW-16A KR MW-16B <br /> Matrix Water Water Water Water <br /> Total Petroleum Hydrocarbons <br /> @ Gasoline 280 <50 34,000(g) 31,000 <br /> ' Benzene <0 5 <0 5 6,800 1,300 <br /> Toluene <0 5 <0 5 23 3,100 <br /> ' Xylenes <10 <10 42 3,300 <br /> �. Ethyl Benzene <0 5 <0 5 49 120 <br /> QA/QC <br /> Surrogate Spike Recovery 78% 77% 88% 74% <br /> Tnfluorotoluene <br /> ' {g} Gas is primarily composed of Benzene <br /> Note Water samples are reported inµgA_,sod and sludge samples in mg/kg <br /> Hiram Cuefo <br /> Lab Director <br /> DHS Certification No 2359 <br /> 3037 Fifth St , Ceres, CA 95307 • Phone (209)581-9280 • Fax (209) 581-9282 <br />