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Report Number 23079 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate Date 11/212001 <br /> Project Name Franks One Stop <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 /> Spike Recovery Data <br /> Benzene 23053-01 <0 50 192 187 169 160 ug/L EPA 82608 10131120088 4 859 2 81 70-130 25 <br /> Toluene 23053-01 1 5 192 187 183 173 ug1L EPA 8260B 10131120088 1 847 392 70-130 25 <br /> Tert-Butanol 23053-01 <5 0 958 934 786 761 ug/L EPA 82608 10131120082 1 81 5 0 788 70-130 25 <br /> Methyl-t-Butyl Ether 23053-01 <0 50 192 18 7 177 173 ug/L EPA 8260B 10131120092 6 927 0 189 70-130 25 <br /> I <br /> i <br /> Approved By J6el Kiff <br /> KIFF ANALYTICAL, LLC 11 <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 U <br />