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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 /> Tert-amyl-methyl ether <br /> 71942-05 <0.50 40.8 40.8 38.9 39.0 ug/L EPA 8260B 2/12/10 95.2 95.5 0.303 78.9-120 25 <br /> Toluene <br /> 71942-05 <0.50 40.3 40.3 43.7 43.0 ug/L EPA 8260B 2/12/10 108 107 1.54 80-120 25 <br /> Benzene <br /> 71952-04 <0.50 40.6 40.6 38.8 38.1 ug/L EPA 8260B 2/12/10 95.7 93.9 1.98 80-120 25 <br /> Diisopropyl ether <br /> 71952-04 <0.50 39.5 39.5 40.5 40.2 ug/L EPA 8260B 2/12/10 103 102 0.810 80-120 25 <br /> Ethanol <br /> 71952-04 <5.0 100 100 94.9 99.7 ug/L EPA 8260B 2/12/10 94.6 99.4 4.94 55.1-159 25 <br /> Ethyl-tert-butyl ether <br /> 71952-04 <0.50 39.9 39.9 39.8 39.2 ug/L EPA 8260B 2/12/10 99.9 98.3 1.60 76.5-120 25 <br /> Ethylbenzene <br /> 71952-04 <0.50 40.3 40.3 41.1 40.6 ug/L EPA 8260B 2/12/10 102 101 1.19 80-120 25 <br /> Methanol <br /> 71952-04 <50 1000 1000 1010 1060 ug/L EPA 8260B 2/12/10 101 106 4.46 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 71952-04 <0.50 40.2 40.2 40.8 40.4 ug/L EPA 8260B 2/12/10 102 101 0.844 69.7-121 25 <br /> v <br /> CD <br /> 0, <br /> rn <br /> 0 <br /> rn <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />