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I .. <br /> GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Phone (209) 572-0900 <br /> Modesto, CA 95351 j FAX (209) 572-0916 <br /> QC REPORT <br /> Report# J343-1$ } Date: 12/18/98 <br /> I <br /> Lab ID abates Analyzed: 12/14/98-12/15/98 <br /> a <br /> Wright Environmental Services, Inc. i4 Method: 8260 <br /> 67 E loth Street <br /> Tracy CA 95376 E <br /> s; <br /> E <br /> li <br /> Samples Analyzed: J22472,J22473,J22474,J22475,J22476,J22477,J22478,J22479,J2248o,J22481,J22482,J22483, <br /> J22484 <br /> Sample Spiked: J22477 <br /> i <br /> 4 <br /> e� <br />- I <br /> I <br /> Analyte Matrix Spike Matrix Spike RPD Blank <br /> %Recovery Duplicate % <br /> Recovery <br /> Methyl tert-Butyl Ether 100.3 107:5 69 ND <br /> Di-isopropyl Ether 104.3 106.1 1.8 ND <br /> Ethyl tertiary-Butyl Ether 102.8 1084 5.3 ND <br /> tertiary-Amyl Methyl Ether .. -. 104.8 110.5 5.2 ND <br /> E� <br /> E <br /> Sie <br /> ' If <br /> I If <br /> 1 <br /> II <br /> AyV1via <br /> O�nn Donna Ke e <br /> Chemist Certification # 1157 Laboratory Director <br />