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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 /> P + M Xylene <br /> 71888-04 <0.50 39.0 38.9 38.7 38.9 ug/L EPA 8260B 2/8/10 99.2 100 0.783 76.8-120 25 <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 /> 71893-05 <0.50 40.6 40.6 37.5 35.9 ug/L EPA 8260B 2/9/10 92.5 88.5 4.45 80-120 25 <br /> Ethylbenzene <br /> 71893-05 <0.50 40.3 40.3 40.4 38.9 ug/L EPA 8260B 2/9/10 100 96.5 3.92 80-120 25 <br /> Methyl-t-butyl ether <br /> 71893-05 <0.50 40.2 40.2 38.3 38.0 ug/L EPA 8260B 2/9/10 95.3 94.5 0.756 69.7-121 25 <br /> P + M Xylene <br /> 71893-05 <0.50 39.2 39.2 40.7 39.4 ug/L EPA 8260B 2/9/10 104 100 3.12 76.8-120 25 <br /> Tert-Butanol <br /> 71893-05 <5.0 199 199 190 189 ug/L EPA 8260B 2/9/10 95.5 94.7 0.831 80-120 25 <br /> v <br /> CD <br /> N <br /> O <br /> W <br /> O <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />