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� 1 <br /> GeoAnalytical Laboratories, Inc. <br /> 1405�11 Kansas Avenue �f. Phone (209) 572-0900 <br /> Modesto, CA 95351 II 1 FAX (209) 572-0916 <br /> IE ii <br /> QC REPORT <br /> j <br /> Report# 'J183-09 ! Date: 07/10/98 <br /> i <br /> r i <br /> Lab ID 3 ;Dates'."Analyzed: 7/10/98 <br /> Thorpe Oil Method: 8260 <br /> 351 N Beckman <br /> Lodi CA II 95240 <br /> Samples (Analyzed: J21010,J21011,J21012,J21013,J21014,J21015°! j <br /> Sample Spiked: Method Spike j <br /> It j <br /> f <br /> i <br /> Analyte Method Spike Method�Spike Relative Blank <br /> j %Recovery Duplicate % Percent <br /> Recovery 'i Difference(%) <br /> Methyl tert-Butyl Ether 90.7 93.3 2.9 ND <br /> Diisopropyl Ether 95.7 90.4 5.6 ND <br /> Ethyl tert-Butyl Ether 100.9 94.9 6.2 ND <br /> tert-Amyl Methyl Ether 96.5 89.8 7.2 ND <br /> F <br /> ll <br /> I <br /> i <br /> r <br /> 4 <br /> i <br /> ly <br /> Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br /> I. ;j <br />