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GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Phone (209) 572-0900 <br /> ' Modesto, CA 95351 FAX (209) 572-0916 <br /> QC REPORT <br /> Report# J209-13 Date: 08/14/98 <br /> ' Lab 1D Dates Analyzed: 08/04/98-08/05/98 <br /> American Geological Services Method: 8020 <br /> 14847 Mono Way <br /> Sonora CA 95370 <br /> Samples Analyzed: J21217-26 <br /> Sample Spiked: J21224 <br /> ' Analyte Matrix Spike Matrix Spike RPD Blank <br /> %Recovery Duplicate % <br /> Recovery <br /> Benzene 96.3 96.7 0.2 ND <br /> ToIuene 97.3 93.8 3.7 ND <br /> Ethyl Benzene 94.6 94.7 0.2 ND <br /> Gasoline 96.2 99.0 2.9 ND <br /> Sylvia Krenn Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />