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0 Report Number 08 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 3/11/2002 <br /> Project Name 420 W. Kettleman Lane, <br /> Project Number 020227-KF-2 <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 25048-01 <0 50 400 400 41 2 401 ug/L EPA 8260E 318!2002 103 100 2 80 70-130 25 <br /> Toluene 25048-01 <0 50 400 400 408 39 6 ug/L. EPA 8260E 3/8/2002 102 990 308 70-130 25 <br /> Tert-Butanol 25048-01 <5 0 200 200 210 217 ug/L EPA 8260B 3/8/2002 105 109 354 70-130 25 <br /> Methyl-t-Butyl Ether 25048-01 <0 50 400 400 368 356 ug/L EPA 8260E 3/8/2002 921 89 0 334 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By J I Kiff <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />