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GeoAnai tical Lab <br /> y oratories, Inc. <br /> 1405 Kansas Avenue Phone (209) 572-0900 <br /> Modesto, CA 95351 FAX (269) 572-0916 <br /> QC REPORT <br /> i <br /> Report# I226-03 Date: 08/20/97 <br /> Lab ID Dates Analyzed: 8%21-22/97 <br /> Thorpe Oil Method: 8020 <br /> 351 N Beckman <br /> Lodi CA 95240 <br /> Samples Analyzed: I21013-5 <br /> Sample Spiked: I21027 ! <br /> 1 <br /> Analyte Matrix Spike Matrix Spike RPD Blank <br /> %Recovery Duplicate % <br /> Recovery <br /> Benzene 91.0 90.4 0.7 ND <br /> Toluene 88.8 88.2 0.7 ND <br /> Ethyl Benzene 89.4 89.9 0.5 ND <br /> Gasoline 94.5 101.2 6.9 ND <br /> '1 <br /> ZZ <br /> Richard Meissner Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br /> I <br />