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GeoAnalytical Laboratories, Inc. <br /> • 1405 - <br /> ' Kansas Avenue Phone {209) 572 0900 <br /> Modesto, CA 95351 FAX (209) 572-0916 <br /> ' QC REPORT <br /> Report# I288-02 Date: 10/20/97 <br /> Lab ID Dates Analyzed: 10/16-17/97 <br /> American Geological Services Method: 602,5030/LUFT <br /> ' PQ Box 3416 <br /> Sonora CA 95370 <br /> Samples Analyzed: 135014-23 <br /> 1 <br /> Sample Spiked: I35017 <br /> Analyte Matrix Spike Matrix Spike RPD Blank <br /> % Recovery Duplicate % <br /> ' Recovery <br /> Benzene 97.4 93.9 3.7 ND <br /> ' Toluene 89.6 92.0 2.6 ND <br /> Ethyl Benzene 93.1 93.1 0.0 ND <br /> Gasoline 98.4 94.9 3.7 ND <br /> I <br /> ' Richard Meissner Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />