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Report Number 30406 <br /> Date 12/20/2002 <br /> QC Report Matrix Spike/Matrix Spike Duplicate <br /> Project Name 2494 East Fremont Street, <br /> Project Number 244-0797 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked <br /> 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 Anal zed Recov Recov Diff Limit Lima <br /> Benzene 30374-01 <0 0050 00404 00396 00387 00326 mg/Kg EPA 82608 12/18/02 95 9 823 15 2 70-130 25 <br /> Toluene 30374-01 <0 0050 00404 00396 6 U 0440 00400 mg/Kg EPA 82608 12118ID2 809 1010356 00301 mg/Kg EPA 8260B 12/18/02 8 2 0 14 a 70-130 25 <br /> 7 43 70-130 25 <br /> Methyl-t-Butyl Ether 30374-01 <0 0050 00404 00396 <br /> Approved By J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 30 vis, CA 95616 530-297-4800 . <br />