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GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Phone (209) 572-0900 <br /> Modesto, CA 95351 FAX (209) 572-0916 <br /> ' QC REPORT <br /> Report# J170-06 Date: 6/24/98 <br /> Lab ID Dates Analyzed: 6/22-6/23/98 <br /> American Geological Services Method: 8020 <br /> PO Box 3416 <br /> Sonora CA 95370 <br /> Samples Analyzed: J32978 through J32982 <br /> Sample Spiked: J32978 <br /> rAnalyte Matrix Spike Matrix Spike Relative Blank <br /> % Recovery Duplicate % Percent <br /> Recovery Difference{%) <br /> Benzene 97.1 95.2 2.0 ND <br /> ' Toluene 97.0 95.5 1.5 ND <br /> Ethyl Benzene 109.3 101.3 7.6 ND <br /> Gasoline 102.2 102.2 0.06 ND <br /> 1 <br /> 1 <br /> 1 <br /> I <br /> ' Sylvia Krenn Donna Keller �- <br /> Chemist Certification # 1157 Laboratory Director <br />