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GeoAnalytical Laboratories, Inc. <br /> • 1405 Kansas Avenue Phone 209 572-0900 <br /> ' ( } <br /> Modesto, CA 95351 FAX (209) 572-0916 <br /> ' QC REPORT <br /> ' Report# J196-18 Date: 08/14/98 <br /> ' Lab ID Dates Analyzed: 07/16/98-07/17/98 <br /> American Geological Services Method: 8020 <br /> ' 14847 Mono Way <br /> Sonora CA 95370 <br /> Samples Analyzed: J21041 <br /> Sample Spiked: Method Spike <br /> 1� <br /> Analyte Method Spike Method Spike RPD Blank <br /> % Recovery Duplicate % <br /> Recovery <br /> Benzene 99.5 99.4 0.2 ND <br /> 1 Toluene 97.3 97.6 0.3 ND <br /> Ethyl Benzene 96.5 96.3 0.2 ND <br /> Gasoline 109.8 104.5 5.2 ND <br /> I <br /> 1 <br /> 1 <br /> i <br /> 1 ,r <br /> Sylvia Krenn Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />