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1 <br /> 1• Ground Zero Analysis, Inc uwoR Eaboratiories <br /> ' 1714 Main Street Date(s)Sampled 02/20/02 <br /> Escalon,CA 95320 02121/02 <br /> Date Received 02/21/02 <br /> 1 Prol ID 186 TPH-g 1 BTUE Date Analyzed 02/25/02 <br /> Site Knowles Rock <br /> Method 8015M 18020A <br /> ' Lab ID CO2339 CO2340 002341 CO2342 <br /> Sample ID KR MW-12 KR MW-14 KR VW-2 KR VW-3 <br /> 1 Matnx Water Water Water Water <br /> ' Total Petroleum Hydrocarbons <br /> @ Gasoline 68 82,000 20,000 3,200 <br /> ' Benzene 16 24,000 120 120 <br /> Toluene 18 180 110 6 5 <br /> ' Xylenes 7 0 1,300 3,200 120 <br /> Ethyl Benzene 10 710 330 41 <br /> ' QA/QC <br /> Surrogate Spike Recovery 102% 96% 99% 91% <br /> ' Tnfluorotoluene <br /> 1 <br /> Note Water samples are reported inµglL,sod and sludge samples in mg ft <br /> ' Hiram Aeto <br /> Lab Director <br /> DHS Certification No 2359 <br /> 1 <br /> 3037 f fth St, Ceres, CA 95307 0 Phone (209) 581-9280 • Fax (209) 581-9282 <br />