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Report Number 24300 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 1/1712002 <br /> Project Name FOS <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 /> Benzene 24297-01 22 196 194 208 189 ug/L EPA 8260B 11151200295 2 861 100 70-130 25 <br /> Toluene 24297-01 <0 50 196 194 187 174 ug/L EPA 8260B 11151200295 4 894 649 70-130 25 <br /> Tert-Butanol 24297-01 <5 0 98 0 973 101 982 ug/L EPA 8260B 111512002103 101 230 70-130 25 <br /> Methyl-t-Butyl Ether 24297-01 6 1 196 194 229 220 ug/L EPA 8260B 11151200285 8 81 9 4 58 70-130 25 <br /> I <br /> i <br /> KIFF ANALYTICAL, LLC Approved By Joel Kiff 11i <br /> 720 Olive Drive Suite D Davis, CA 95616 530-297-4800 <br />