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Report Number : 42985 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date : 03/28/2005 <br /> Project Name : 7700 Moreland Street, <br /> Project Number : 207-0953-001 <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 /> Benzene 42956-02 <0.0050 0.0392 0.0384 0.0372 0.0380 mg/Kg EPA 82608 3/25/05 95.0 98.9 4.11 70-130 25 <br /> Toluene 42956-02 <0.0050 0.0392 0.0384 0.0388 0.0396 mg/Kg EPA 8260B 3/25/05 98.9 103 4.14 70-130 25 <br /> Methyl-t-Butyl Ether 42956-02 <0.0050 0.0392 0.0384 0.0372 0.0380 mg/Kg EPA 8260B 3/25/05 94.9 99.1 4.38 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By: Joe iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />