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Report Number : 71894 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 02/13/2010 <br /> Project Name : 1 Q10 QMS - STTC <br /> Project Number : 185702030.200.005 <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 /> Tert-Butanol <br /> 71888-04 <5.0 198 198 185 184 ug/L EPA 8260B 2/8/10 93.1 93.2 0.116 80-120 25 <br /> Tert-amyl-methyl ether <br /> 71888-04 <0.50 40.6 40.5 37.7 37.6 ug/L EPA 8260B 2/8/10 92.8 92.9 0.169 78.9-120 25 <br /> Toluene <br /> 71888-04 <0.50 40.1 40.0 39.3 38.6 ug/L EPA 8260B 2/8/10 98.0 96.6 1.48 80-120 25 <br /> Benzene <br /> 71887-03 <0.50 40.1 39.8 38.2 39.6 ug/L EPA 8260B 2/9/10 95.4 99.3 3.97 80-120 25 <br /> Diisopropyl ether <br /> 71887-03 <0.50 39.0 38.8 39.7 41.0 ug/L EPA 8260B 2/9/10 102 106 3.88 80-120 25 <br /> Ethanol <br /> 71887-03 10 99.1 98.5 88.6 95.1 ug/L EPA 8260B 2/9/10 79.0 86.0 8.50 55.1-159 25 <br /> Ethyl-tert-butyl ether <br /> 71887-03 <0.50 39.4 39.2 38.8 39.8 ug/L EPA 8260B 2/9/10 98.5 101 3.00 76.5-120 25 <br /> Ethylbenzene <br /> 71887-03 <0.50 39.8 39.6 39.8 41.0 ug/L EPA 8260B 2/9/10 99.9 104 3.61 80-120 25 <br /> Methanol <br /> 71887-03 120 990 984 923 1020 ug/L EPA 8260B 2/9/10 81.4 91.8 11.9 53.2-147 25 <br /> v <br /> CD <br /> 41 <br /> 0 <br /> rn <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />