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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 /> Ethanol <br /> 71925-09 <5.0 100 100 92.6 98.0 ug/L EPA 8260B 2/10/10 92.4 97.7 5.60 55.1-159 25 <br /> Ethyl-tert-butyl ether <br /> 71925-09 <0.50 39.9 39.9 39.1 38.0 ug/L EPA 8260B 2/10/10 97.9 95.1 2.87 76.5-120 25 <br /> Ethylbenzene <br /> 71925-09 <0.50 40.3 40.3 40.8 38.8 ug/L EPA 8260B 2/10/10 101 96.1 5.10 80-120 25 <br /> Methanol <br /> 71925-09 <50 1000 1000 985 1030 ug/L EPA 8260B 2/10/10 98.3 102 4.23 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 71925-09 <0.50 40.2 40.2 39.9 38.9 ug/L EPA 8260B 2/10/10 99.2 96.8 2.55 69.7-121 25 <br /> P + M Xylene <br /> 71925-09 <0.50 39.2 39.2 38.5 36.7 ug/L EPA 8260B 2/10/10 98.2 93.6 4.75 76.8-120 25 <br /> Tert-Butanol <br /> 71925-09 <5.0 199 199 184 182 ug/L EPA 8260B 2/10/10 92.2 91.5 0.762 80-120 25 <br /> Tert-amyl-methyl ether <br /> 71925-09 <0.50 40.8 40.8 37.9 37.0 ug/L EPA 8260B 2/10/10 92.8 90.6 2.49 78.9-120 25 <br /> Toluene <br /> 71925-09 <0.50 40.3 40.3 42.2 40.4 ug/L EPA 8260B 2/10/10 104 100 4.27 80-120 25 <br /> v <br /> CD <br /> Cn <br /> w <br /> 0 <br /> rn <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />