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• <br /> Report Number 31995 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate Date 3/1812003 <br /> Protect Name Sanchez <br /> Project Number Sanchez <br /> Duplicate Spiked <br /> Sp <br /> Duplicate Spiked iked Sample Relative <br /> Spike Spiked Spiked Sample SampleRelative 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 31965-01 <0 0050 00395 00395 00340 00325 mg/Kg EPA 8260B 318103 861 824 4 48 70-130 25 <br /> Toluene 31965-01 <0 0050 00395 00395 00315 00298 mg/Kg EPA 8260B 318103 79 6 75 4 542 70-130 25 <br /> Methyl-t-Butyl Ether 31965-01 <0 0050 00395 00395 00321 00309 mg/Kg EPA 82608 3/8103 813 782 379 70-130 25 <br /> i <br /> Approved By J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />