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Report Number: 28228 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date : 8/30/2002 <br /> Project Name : FULTON <br /> Project Number : 3490 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup. Sample Sample Analysis Date Percent Percent Percent Recov. Diff. <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov. Recov. Diff. Limit Limit <br /> Benzene 28246-07 <0.50 40.0 40.0 45.2 43.6 ug/L EPA 8260B 8128102 113 109 3.58 70-130 25 <br /> Toluene 28246-07 X0.50 40.0 40.0 38.6 37.3 ug/L EPA 8260E 8128102 96.5 93.2 3.48 70-130 25 <br /> Tert-Butanol 28246-07 <5.0 200 200 198 201 ug/L EPA 82608 8128102 99.3 100 1.32 70-130 25 <br /> Methyl-t-Butyl Ether 28246-07 <0.50 40.0 40.0 45.0 44.3 ug/L EPA 8260B 8128102 112 111 1.50 70-130 25 <br /> I <br /> Approved By: Joel Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 �r <br />