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Report Number : 71859 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 02/11/2010 <br /> Project Name : 1 Q10 QMS - STTC <br /> Project Number : 185702192.200.0005 <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 /> 71859-01 <5.0 199 199 186 186 ug/L EPA 8260B 2/8/10 93.3 93.4 0.102 80-120 25 <br /> Tert-amyl-methyl ether <br /> 71859-01 <0.50 40.8 40.8 37.5 37.6 ug/L EPA 8260B 2/8/10 91.8 92.1 0.347 78.9-120 25 <br /> Toluene <br /> 71859-01 <0.50 40.3 40.3 40.6 39.1 ug/L EPA 8260B 2/8/10 101 96.8 3.88 80-120 25 <br /> Benzene <br /> 71887-03 <0.50 40.6 40.6 39.7 38.4 ug/L EPA 8260B 2/8/10 97.8 94.8 3.10 80-120 25 <br /> Ethylbenzene <br /> 71887-03 <0.50 40.3 40.3 43.2 40.8 ug/L EPA 8260B 2/8/10 107 101 5.80 80-120 25 <br /> Methyl-t-butyl ether <br /> 71887-03 <0.50 40.2 40.2 39.7 39.6 ug/L EPA 8260B 2/8/10 98.8 98.6 0.204 69.7-121 25 <br /> P + M Xylene <br /> 71887-03 <0.50 39.2 39.2 43.0 41.5 ug/L EPA 8260B 2/8/10 110 106 3.61 76.8-120 25 <br /> Tert-Butanol <br /> 71887-03 <5.0 199 199 197 194 ug/L EPA 8260B 2/8/10 98.8 97.1 1.68 80-120 25 <br /> Toluene <br /> 71887-03 <0.50 40.3 40.3 40.4 40.0 ug/L EPA 8260B 2/8/10 100 99.2 0.872 80-120 25 <br /> v <br /> cc <br /> CD <br /> w <br /> 0 <br /> 41 <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />