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I� t <br /> GeoAnalytical Laboratories, Inc. <br /> 1405�,1 Kansas Avenue � I'Ij '' Phone (209) 572-0900 <br /> Modesto, CA 95351i FAX (209) 572-0916 <br /> QC REPORT <br /> Report# I J183-09 I. Date: 07/10/98 <br /> Lab ID i. Dates.Analyzed: 7/10/98 <br /> i r <br /> I� <br /> Thorpe bil Method: 8260 <br /> 351 N Beckman <br /> Lodi CA'I 95240 <br /> I <br /> I� <br /> Samples Analyzed: J21000-J21009 <br /> III P III _ .t <br /> Sample Spiked: J21009 <br /> i <br /> Analyte I! Method Spike Method)Spike':, Relative Blank <br /> %Recovery Duplicate % j Percent a <br /> Recovery Difference (/o) <br /> Methyl tert-Butyl Ether 88.7 8819 0.2 ND <br /> Diisopropyl Ether 99.7 100.5 0.8 ND <br /> Ethyl test-Butyl Ether 100.6 100.6 0.0 ND <br /> tert-Amyl Methyl Ether 93.9 . 92.15 1.5 ND <br /> ij <br /> II <br /> I� <br /> �k <br /> II <br /> li a <br /> Ilk <br /> II <br /> j Donna Keller , <br /> � Chemist Certification # 1157 Laboratory Director <br />