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GeoAnalytical Laboratories, Inc. <br /> ' 1405 Kansas Avenue p _hone (209) 572 0900 <br /> Modesto, CA 95351 FAX (209) 572-0916 <br /> ' QC REPORT <br /> ' Report# J209-10 Date: 08/14/98 <br /> ' Lab ID Dates Analyzed: 08/03/98 <br /> American Geological Services Method: 8020 <br /> 14847 Mono Way <br /> Sonora CA 95370 <br /> 1 <br /> Samples Analyzed: J21207-9 <br /> Sample Spiked: Method Spike <br /> Analyte Method Spike Method Spike RPD BIank <br /> %Recovery Duplicate <br /> Recovery <br /> Benzene 105.8 104.8 0.9 ND <br /> Toluene 93.6 92.8 0.9 ND <br /> Ethyl Benzene 95.2 94.9 0.3 ND <br /> Gasoline 101.5 101.1 0.4 ND <br /> Sylvia Krenn Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />