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ao� laboratories <br /> 1 <br /> Ground Zero Analysis Date(s)Sampled: 05/20/04 <br /> t 1714 Main Street Volatile Organics By GUMS 05/21/04 <br /> Escalon,CA 95320 Date Received: 05/21/04 <br /> ' Proj. ID: 1$6 Method: EPA 62608 Date Analyzed: 05/25/04 <br /> Site:Knowles Roek <br /> Matrix:Water <br /> ' Lab ID: E05329(d) E05330 E05331 E05332 <br /> Sample ID: KR MW-14 KR MW-15A KR MW-15B KR MW-15C <br /> Units: ug/L ug[L ug/L ug/L <br /> ' t-Butanol(TBA) <2,000 <20 <20 <20 <br /> Methyl-t-Butyl Ether(MTBE) 26,000 4.6 300 <2.0 <br /> Di-Isopropyl Ether(DIPE) <200 <2,0 <2.0 <2.0 <br /> Ethyl-t-Butyl Ether(ETRE) <200 <2.0 <2.0 <2,0 <br /> ' t-Amyl Methyl Ether(TAME) <200 <2,0 <2.0 <2.0 <br /> 1,2-Dichloroethane(1,2-DCA) <200 6.0 6.0 2.4 <br /> '. 1,2-Dibromoethane(EDB) <200 <2.0 <2.0 <2.0 <br /> QA/QC: <br /> ' Surrogate Spike Recovery: 94% 89% 88% 88% <br /> 1 <br /> ' Note(s): <br /> (d):Sample diluted due to high concentration of target analytes and/or high organic content <br /> ' Water samples are reported in up/L;soll/sludge samples in mg/Kg;product(oil/non-aqueous liquid samples in mg/L. <br /> ND means not detected at or above the stated reporting limit;NIA means analyte not applicable to this analysis. <br /> Hiram Cueto <br /> ' Lab Director <br /> DHS Certification No.2359 <br /> 3037 Fifth 5t., Ceres, CA 95307 • Phone (209) 581-9280 • Fox (209) 581-9282 <br /> 1 <br />