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11 / <br /> ORGANICS INORGANICS ON-SITE <br /> GC/ MS GC AA IR <br /> .ARGON Laboratories , Inc . <br /> W375thStr'eet Ceres, CA 55307 (209)5E31-9280 Fax(209)591-9282 <br /> GROUND ZERO ANALYSIS, INC <br /> 1714 Main Street Date(s)Sampled 10/12/99 <br /> Escalon,CA 95320 10/13199 <br /> Date Received 10193/99 <br /> Prot ID 98-263 Oxygenated Volatile Organics By GCIMS Date Analyzed 10114/99 <br /> Site Tuleburg Warehouse <br /> Method EPA 8260 <br /> Lab ID 910291(d) 910292 910293(d) 910294 <br /> Sample ID TW-MW-1 TW-MW-2 TW-MW-3 TW-MW-4 <br /> Matnx Water Water Water Water <br /> t-Butanol(TBA) 41000 <50 <2000 <50 <br /> Methyl-t-Butyl Ether(MTBE) 44,000 61 39,000 52 <br /> DI-Isopropy! Ether(RIPE) <100 <5 0 <200 <5 0 <br /> Ethyl-t-Butyl Ether(ETRE) <100 <5 0 <200 <5 0 <br /> t-Amyl Methyi Ether(TAME) 180 <5 0 <200 <50 <br /> QA1QC <br /> Surrogate Spike Recovery 118% 138° 116% 124% <br /> (d) Higher detection limits are due to dilution factors Sample diluted due to high concentration of target analytes <br /> " water samples are reported in ug/L,soil and sludge samples in ug/kg <br /> v� <br /> Hiram Cueto <br /> Lab Director <br /> DHS Certification No 2359 <br />