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Report Number: 69416 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date : 08/04/2009 <br /> Project Name: Cox& COX <br /> Project Number <br /> Duplicate Spiked 'Sppkedtel Sample Relative <br /> Spike Spiked Spiked Sample Sample Re 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 /> Lead 6944842 4.7 50.0 50.0 46.2 46.0 mg/KgEPA 60106 7/30/09 83.0 82.6 0.434 75-125 20 <br /> TPH as Diesel . 69411-07 <1.0 20.0 20.0 18.1 18.1 mg/Kg M EPA 8015 8/3/09 90.5 90.4 0.0490 60-140 25 <br /> Toluene 69417-01 <0.0050 0.0392 0.0386 0.0372 0.0389 mg/Kg EPA 8260B 7/29/09 95.1 101 5.94 70-130 25 <br /> AL <br /> f <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530.297-4800 <br />