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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# J259-17 Date: 9/24/98 <br /> Lab ID Dates Analyzed: 9/23/98 <br /> M.J. Kloberdanz & Associates Method: 8020 <br /> P.O. Box 576981 <br /> Modesto CA 95357 <br /> Samples Analyzed: J21670,)21672,J21674,J27675,J21676 <br /> Sample Spiked: J21674 <br /> Analyte Matrix Spike Matrix Spike Relative Blank <br /> % Recovery Duplicate % Percent <br /> Recovery Difference{%) <br /> Benzene 95.5 95.4 0.2 ND <br /> Toluene 92.8 92.6 0.2 ND <br /> Ethyl Benzene 93.9 93.8 0.2 ND <br /> Gasoline 98.0 99.2 1.3 ND <br /> I <br /> I <br /> Sylvia Krenn Donna Keller <br /> Chemist Certification # 11 7 Laboratory Director <br />