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�iUoEi kboratories <br /> • GROUND ZERO ANALYSIS, INC <br /> ' 1714 Main Street <br /> Escalon,CA 95320 Date Sampled 03/07/01 <br /> Date Received 03/07/01 <br /> ' Prol ID 186 Volatile Organics By GCIMS Date Analyzed 03/12/01 <br /> Site Knowles Roek <br /> Method EPA 8260E <br /> Lab ID B03174 B03175(d) 803176 <br /> Sample ID KR MW-7 KR MW-8 KR MW-9 <br /> Matnx Water Water Water <br /> Methanol <500 <1,000 <500 <br /> Ethanol <250 <500 <250 <br /> t-Butanol(TBA) <20 <40 <20 <br /> ' Methyl-t-Butyl Ether(MTBE) 39 <4 0 98 <br /> Dl-Isopropyl Ether(DIPE) <2 0 <4 0 <2 0 <br /> '• Ethyl-t-Butyl Ether(ETRE) <2 0 <4 0 <2 0 <br /> t-Amyl Methyl Ether(TAME) <20 <40 <2 0 <br /> 1,2-Dlchloroethane (1,2-DCA) <2 0 <4 0 31 <br /> ' 1,2-Dibromoethane(EDB) <2 0 <4 0 <2 0 <br /> ' QAlQC <br /> Surrogate Spike Recovery 76% 63% 67% <br /> (d) Higher detection limits are due to dilution factors Sample diluted due to high organic content and/or high concentration of target analytes <br /> water samples are reported in ug/L,soil and sludge samples in ug/kg <br /> Hiram Cueto <br /> Lab Director <br /> ' DHS Certficatron No 2359 <br /> 3037 Fifth St, Ceres, CA 95307 0 Phone (209) 581-9280 0 Fax (209) 581-9282 <br />