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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 /> Toluene <br /> 71893-05 <0.50 40.3 40.3 40.2 38.6 ug/L EPA 8260B 2/9/10 99.8 95.8 4.07 80-120 25 <br /> Benzene <br /> 71887-03 <0.50 40.6 40.6 37.7 37.5 ug/L EPA 8260B 2/9/10 93.0 92.5 0.574 80-120 25 <br /> Ethyl-tert-butyl ether <br /> 71887-03 <0.50 39.9 39.9 38.8 37.3 ug/L EPA 8260B 2/9/10 97.2 93.4 3.98 76.5-120 25 <br /> Ethylbenzene <br /> 71887-03 <0.50 40.3 40.3 41.0 41.2 ug/L EPA 8260B 2/9/10 102 102 0.488 80-120 25 <br /> Methyl-t-butyl ether <br /> 71887-03 <0.50 40.2 40.2 36.5 37.0 ug/L EPA 8260B 2/9/10 90.8 92.1 1.33 69.7-121 25 <br /> P + M Xylene <br /> 71887-03 <0.50 39.2 39.2 41.3 41.6 ug/L EPA 8260B 2/9/10 105 106 0.824 76.8-120 25 <br /> Tert-Butanol <br /> 71887-03 <5.0 199 199 191 196 ug/L EPA 8260B 2/9/10 95.6 98.3 2.83 80-120 25 <br /> Toluene <br /> 71887-03 <0.50 40.3 40.3 39.2 38.9 ug/L EPA 8260B 2/9/10 97.3 96.5 0.742 80-120 25 <br /> Benzene <br /> 71915-01 0.51 40.6 40.6 40.2 39.6 ug/L EPA 8260B 2/11/10 97.7 96.5 1.28 80-120 25 <br /> v <br /> CD <br /> N <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 />