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Report Number : 75042 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 10/26/2010 <br /> Project Name : Parcel #2A - 4Q10 Monitoring and Sampling <br /> Project Number : 211402828.300.250 <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 /> Isopropyl benzene <br /> 75002-16 <0.50 40.0 40.0 39.4 39.6 ug/L EPA 8260B 10/21/10 98.4 99.0 0.553 70.0-130 25 <br /> Methyl-t-butyl ether <br /> 75002-16 <0.50 40.0 40.0 37.2 37.2 ug/L EPA 8260B 10/21/10 92.9 93.0 0.147 69.7-121 25 <br /> Methylene Chloride <br /> 75002-16 <5.0 40.0 40.0 39.2 38.6 ug/L EPA 8260B 10/21/10 98.0 96.6 1.49 70.0-130 25 <br /> Naphthalene <br /> 75002-16 <0.50 40.0 40.0 40.3 40.4 ug/L EPA 8260B 10/21/10 101 101 0.441 70.0-130 25 <br /> O-Xylene <br /> 75002-16 <0.50 40.0 40.0 39.7 39.6 ug/L EPA 8260B 10/21/10 99.2 99.0 0.181 79.7-120 25 <br /> P + M Xylene <br /> 75002-16 <0.50 40.0 40.0 39.3 39.2 ug/L EPA 8260B 10/21/10 98.2 98.0 0.151 76.8-120 25 <br /> Styrene <br /> 75002-16 <0.50 40.0 40.0 41.1 41.0 ug/L EPA 8260B 10/21/10 103 103 0.0374 70.0-130 25 <br /> Tert-Butanol <br /> 75002-16 <5.0 200 200 198 201 ug/L EPA 8260B 10/21/10 98.8 100 1.75 80-120 25 <br /> Tert-amyl-methyl ether <br /> 75002-16 <0.50 40.2 40.2 38.6 38.9 ug/L EPA 8260B 10/21/10 96.0 96.7 0.789 78.9-120 25 <br /> Tetrachloroethene <br /> 75002-16 <0.50 40.0 40.0 38.6 38.7 ug/L EPA 8260B 10/21/10 96.5 96.7 0.226 77.0-120 25 <br /> v <br /> co <br /> N <br /> O <br /> 67 <br /> CO <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />