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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 /> Methanol <br /> 75002-17 73 1000 1000 954 983 ug/L EPA 8260B 10/21/10 88.0 90.9 3.20 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 75002-17 <0.50 40.0 40.0 37.3 37.7 ug/L EPA 8260B 10/21/10 93.2 94.3 1.20 69.7-121 25 <br /> Methylene Chloride <br /> 75002-17 <5.0 40.0 40.0 37.4 37.2 ug/L EPA 8260B 10/21/10 93.5 92.9 0.603 70.0-130 25 <br /> Naphthalene <br /> 75002-17 <0.50 40.0 40.0 42.2 42.5 ug/L EPA 8260B 10/21/10 105 106 0.809 70.0-130 25 <br /> O-Xylene <br /> 75002-17 <0.50 40.0 40.0 40.1 39.2 ug/L EPA 8260B 10/21/10 100 98.1 2.16 79.7-120 25 <br /> P + M Xylene <br /> 75002-17 <0.50 40.0 40.0 40.8 39.1 ug/L EPA 8260B 10/21/10 102 97.8 4.15 76.8-120 25 <br /> Styrene <br /> 75002-17 <0.50 40.0 40.0 41.9 40.7 ug/L EPA 8260B 10/21/10 105 102 2.90 70.0-130 25 <br /> Tert-Butanol <br /> 75002-17 <5.0 200 200 196 199 ug/L EPA 8260B 10/21/10 98.2 99.7 1.50 80-120 25 <br /> Tert-amyl-methyl ether <br /> 75002-17 <0.50 40.2 40.2 40.0 40.4 ug/L EPA 8260B 10/21/10 99.3 100 0.992 78.9-120 25 <br /> Tetrachloroethene <br /> 75002-17 <0.50 40.0 40.0 38.8 38.0 ug/L EPA 8260B 10/21/10 97.0 95.1 2.00 77.0-120 25 <br /> v <br /> co <br /> w <br /> 0 <br /> rn <br /> CO <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />