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10/28/1998 12 49 209-982-9365 JOE'S PLACE PAGE 22 <br /> GeoAnaiytical Laboratories, Inc. <br /> 1405 Kansas Avenue Phone (209) 572-0900 <br /> Modesto, CA 95351 FAX (209) 572-0916 <br /> QC REPORT <br /> Report# J282 05 Date 10/19/98 <br /> Lab ID Dates Analyzed 10/16/98 <br /> Banks & Co Method 8260 <br /> 2403 E Belmont Ave <br /> Fresno,CA 93701 <br /> Samples Analyzed J21799,J21800 Composite,T2l801-J218Q4,Jz1807,J21808,J218]1 <br /> Sample Spiked 81ark Sand <br /> Analyte Matrix Spike Matrix Spike RPD BIank <br /> 9'6 Recovery Duplicate % <br /> Methyl tertiary-Butyl Ether 1074 1087 12 ND <br /> Di-isopropyl Ether 1163 118 0 1 4 ND <br /> Ethyl textisry-Butyl Ether 1128 1129 01 ND <br /> tertiaary-Ainyl Methyl Ether 1092 ills 21 ND <br /> 1 `�c <br /> w <br /> 5v1v11 KXenn Donna Keller <br /> chemist Certification # 1157 Laboratory Director <br />