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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 /> Vinyl Chloride • <br /> 80551-03 <0.50 40.0 40.0 44.8 41.2 ug/L EPA 8260B 3/8/12 112 103 8.34 42.1-138 25 <br /> c-1,3-Dichloropropene <br /> 80551-03 <5.0 40.0 40.0 36.5 35.7 ug/L EPA 8260B 3/8/12 91.3 89.2 2.22 70.0-130 25 <br /> cis-1,2-Dichloroethene <br /> 80551-03 <0.50 40.0 40.0 38.7 37.9 ug/L EPA 8260B 3/8/12 96.8 94.7 2.15 70.0-130 25 <br /> n-butylbenzene <br /> 80551-03 <0.50 40.0 40.0 39.8 37.4 ug/L EPA 8260B 3/8/12 99.5 93.6 6.14 70.0-130 25 <br /> n-propylbenzene <br /> 80551-03 <0.50 40.0 40.0 38.5 36.8 ug/L EPA 8260B 3/8/12 96.2 92.0 4.51 70.0-130 25 <br /> p-isopropyltoluene <br /> 80551-03 <0.50 40.0 40.0 39.8 38.0 ug/L EPA 8260B 3/8/12 99.6 95.0 4.72 70.0-130 25 <br /> sec-butylbenzene <br /> 80551-03 <0.50 40.0 40.0 39.1 36.9 ug/L EPA 8260B 3/8/12 97.8 92.2 5.87 70.0-130 25 • <br /> t-1,2-Dichloroethene <br /> 80551-03 <5.0 40.0 40.0 40.3 38.5 ug/L EPA 8260B 3/8/12 101 96.2 4.74 70.0-130 25 <br /> t-1,3-Dichloropropene <br /> 80551-03 <5.0 40.0 40.0 37.4 36.0 ug/L EPA 8260B 3/8/12 93.5 90.0 3.83 70.0-130 25 <br /> tert-butylbenzene <br /> 80551-03 <0.50 40.0 40.0 38.2 37.0 ug/L EPA 8260B 3/8/12 95.5 92.5 3.22 70.0-130 25 <br /> d <br /> m <br /> N <br /> 0) <br /> O <br /> A <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />