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Report Number : 80542 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 03/12/2012 <br /> Project Name : San Lorenzo Lumber <br /> Project Number : <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 /> Ethylbenzene <br /> 80593-01 81 40.0 40.0 120 118 ug/L EPA 8260B 3/9/12 97.9 91.2 7.06 80-120 25 • <br /> Hexachlorobutadiene <br /> 80593-01 <0.50 40.0 40.0 16.2 15.6 ug/L EPA 82608 3/9/12 40.5 39.0 3.75 70.0-130 25 <br /> Isopropyl benzene <br /> 80593-01 40 40.0 40.0 78.4 76.1 ug/L EPA 8260B 3/9/12 94.6 88.8 6.31 70.0-130 25 <br /> Methanol <br /> 80593-01 <50 1000 1000 936 893 ug/L EPA 82608 3/9/12 93.6 89.3 4.66 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 80593-01 <0.50 40.4 40.4 38.0 37.8 ug/L EPA 82608 3/9/12 93.9 93.6 0.342 69.7-121 25 <br /> Methylene Chloride <br /> 80593-01 <5.0 40.0 40.0 37.1 36.2 ug/L EPA 82608 3/9/12 92.6 90.6 2.22 70.0-130 25 <br /> Naphthalene <br /> 80593-01 34 40.0 40.0 70.8 70.0 ug/L EPA 8260B 3/9/12 91.4 89.5 2.17 70.0-130 25 <br /> O-Xylene • <br /> 80593-01 0.69 40.0 40.0 38.9 38.0 ug/L EPA 82608 3/9/12 95.5 93.2 2.48 79.7-120 25 <br /> P + M Xylene <br /> 80593-01 20 40.0 40.0 57.4 56.2 ug/L EPA 82606 3/9/12 94.6 91.6 3.21 76.8-120 25 <br /> Styrene <br /> 80593-01 <0.50 40.0 40.0 40.6 39.6 ug/L EPA 82608 3/9/12 101 99.1 2.26 70.0-130 25 <br /> m <br /> v <br /> m <br /> w_ <br /> 0 <br /> A <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />