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Report Number : 71893 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 02/16/2010 <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 /> Ethyl-tert-butyl ether <br /> 71915-01 <0.50 39.9 39.9 40.0 40.0 ug/L EPA 8260B 2/11/10 100 100 0.00464 76.5-120 25 <br /> Ethylbenzene <br /> 71915-01 <0.50 40.3 40.3 42.2 41.4 ug/L EPA 8260B 2/11/10 105 103 2.03 80-120 25 <br /> Methanol <br /> 71915-01 <50 1000 1000 1100 1140 ug/L EPA 8260B 2/11/10 110 114 3.66 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 71915-01 8.0 40.2 40.2 49.1 49.2 ug/L EPA 8260B 2/11/10 102 102 0.286 69.7-121 25 <br /> P + M Xylene <br /> 71915-01 <0.50 39.2 39.2 39.8 39.0 ug/L EPA 8260B 2/11/10 101 99.4 1.95 76.8-120 25 <br /> Tert-Butanol <br /> 71915-01 18 199 199 206 204 ug/L EPA 8260B 2/11/10 94.5 93.6 1.05 80-120 25 <br /> Toluene <br /> 71915-01 <0.50 40.3 40.3 43.9 43.1 ug/L EPA 8260B 2/11/10 109 107 1.80 80-120 25 <br /> Benzene <br /> 71893-01 <0.50 40.6 40.6 35.6 34.0 ug/L EPA 8260B 2/9/10 87.7 83.8 4.59 80-120 25 <br /> Diisopropyl ether <br /> 71893-01 <0.50 39.5 39.5 36.6 35.5 ug/L EPA 8260B 2/9/10 92.8 90.0 3.07 80-120 25 <br /> v <br /> CD <br /> N <br /> W <br /> O <br /> W <br /> O <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />