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� 1 <br /> Ground Zero Analyses, Inc uga,� kboratorles <br /> ' 1714 Main Street <br /> Escalon, CA 95320 Date Sampled 02/21/02 <br /> Date Received 02/29!02 <br /> ' Prol ID 186 TPH-g 1 BTUE Date Analyzed 02/25/02 <br /> Site Knowles Rock <br /> Method 8015M!8020A <br /> ' <br /> Lab ID CO2331 CO2332 CO2333 002334 <br /> Sample ID KR MW-1 KR MW-2 KR MW-3 KR MW4 <br /> ' Matnx Water Water Water Water <br /> Total Petroleum Hydrocarbons <br /> @ Gasoline 200 540 30,000 40,000 <br /> ' Benzene <0 5 89 15,000 18,000 <br /> Toluene <0 5 54 36 20 <br /> Xylenes <10 49 150 700 <br /> ' Ethyl Benzene <0 5 27 170 760 <br /> QA/QC <br /> 1 Surrogate Spike Recovery 95% 96% 97% 99% <br /> Tnfluorotoluene <br /> 1 � <br /> ' Note Water samples are reported inµg/L sod and sludge samples in mglkg <br /> I <br /> ' Hiram Clueto <br /> Lab Director <br /> DHS Certification No 2359 <br /> ' 3037 Fifth St, Ceres, CA 95307 0 Phone (209) 5819280 • Fax {209} 5819282 <br /> I <br />