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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 /> 71859-22 <5.0 195 199 200 202 ug/L EPA 8260B 2/8/10 102 102 0.575 80-120 25 <br /> Toluene <br /> 71859-22 <0.50 39.5 40.2 41.1 42.1 ug/L EPA 8260B 2/8/10 104 104 0.348 80-120 25 <br /> Benzene <br /> 71859-01 <0.50 40.6 40.6 37.9 36.2 ug/L EPA 8260B 2/8/10 93.4 89.3 4.50 80-120 25 <br /> Diisopropyl ether <br /> 71859-01 <0.50 39.5 39.5 38.7 38.5 ug/L EPA 8260B 2/8/10 98.0 97.6 0.387 80-120 25 <br /> Ethyl-tert-butyl ether <br /> 71859-01 <0.50 39.9 39.9 39.7 39.0 ug/L EPA 8260B 2/8/10 99.6 97.9 1.68 76.5-120 25 <br /> Ethylbenzene <br /> 71859-01 <0.50 40.3 40.3 40.5 39.2 ug/L EPA 8260B 2/8/10 100 97.3 3.30 80-120 25 <br /> Methanol <br /> 71859-01 <50 1000 1000 1110 1150 ug/L EPA 8260B 2/8/10 111 115 3.14 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 71859-01 <0.50 40.2 40.2 38.6 38.8 ug/L EPA 8260B 2/8/10 96.0 96.6 0.533 69.7-121 25 <br /> P + M Xylene <br /> 71859-01 <0.50 39.2 39.2 40.5 39.6 ug/L EPA 8260B 2/8/10 103 101 2.24 76.8-120 25 <br /> v <br /> cc <br /> CD <br /> w <br /> w <br /> 0 <br /> 41 <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />