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&Tg@R kiboratorles <br /> • Ground Zero Analysis, Inc <br /> ' 1714 Main Street <br /> Escalon, CA 95320 Date Sampled 02/21/02 <br /> Date Received 02/21/02 <br /> ' Prol ID 186 Volatile Organics By GUMS Date Analyzed 02/28/02 <br /> Site Knowles Rock <br /> Method EPA 8260B <br /> Lab ID CO2331 CO2332 CO2333(d) CO2334(d) <br /> ' Sample ID KR MW-1 KR MW-2 KR MW-3 KR MW4 <br /> Matrix Water Water Water Water <br /> ' t-Butanol(TBA) <20 <20 <1,000 <1,000 <br /> Methyl-t-Butyl Ether(MTBE) <2 0 <2 0 15,000 10,000 <br /> Dl-Isopropyl Ether(DIPE) <2 0 <2 0 <100 <100 <br /> ' Ethyl-t-Butyl Ether(ETRE) <2 0 <2 0 <100 <100 <br /> t-Amyl Methyl Ether(TAME) <2 0 <2 0 <100 <100 lo, : - LIV, <br /> ' 1,2-Dlchtoroethane(1,2-DCA) <2 0 35 <100 <100 <br /> 1,2-Dlbromoethane(EDB) <2 0 <2 0 <100 <100 <br /> ' <br /> QA/QC <br /> Surrogate Spike Recovery 94% 93% 102% 99% <br /> ' (d) Higher detection limits are due to dilution factors Sample diluted due to high organic content <br /> Note Water samples are reported inµg/L,sod and sludge samples in mg/kg <br /> H[ram�UetO <br /> ' Lab Director <br /> DHS Certification No 2359 <br /> ' 3037 Fifth St, Ceres, CA 95307 0 Phone (209) 581-9280 0 Fax (209) 5819282 <br />