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Report Number 30002 <br /> QC Report: Matrix Spike!Matrix Spike Duplicate Date 12/3/2002 <br /> Project Name 2494 East Fremont Street, <br /> Project Number 244-0797 <br /> Duplicate Spiked Spikled to 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 29886-05 <0 0050 00401 00392 00394 00386 mg/Kg EPA 8260B 11/30/02 984 986 0152 70-130 25 <br /> Toluene 29888-05 <0 0050 00401 00392 00392 00382 mg/Kg EPA 82606 11/30/02 97 8 97 4 0 435 70-130 25 <br /> Tert-Butanol 29886-05 <0 0050 0200 0196 0180 0 180 mg/Kg EPA 8260B 11/30/02 899 920 226 70-130 25 <br /> Methyl-t-Butyl Ether 29886-05 <0 0050 00401 00392 00331 00322 mg/Kg EPA 8260B 11/30/02 826 820 0 759 70-130 25 <br /> I <br /> i <br /> i <br /> I <br /> i <br /> KI FF ANALYTICAL, LLApproved By .1 1 Kiff <br /> C <br /> 2795 2nd St, Suite 3010vis, CA 95616 530-297-4800 . J <br />