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Report Number: 69194 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date : 07/16/2009 <br /> Project Name : Sara Lee - Lincoln Street (Well Installations) <br /> Project Number 62403335 - 024522 <br /> Spiked <br /> Duplicate Spiked Duplicate <br /> to 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 /> 1,2-Dichloroethane 69217-05 <0.50 40.8 40.8 41.5 40.8 ug/L EPA 8260B 7/9/09 102 100 1.71 70-130 25 <br /> Benzene 69217-05 <0.50 40.6 40.6 40.4 39.8 ug/L EPA 8260B 7/9/09 99.5 98.0 1.47 70-130 25 <br /> Methyl-t-butyl ether 69217-05 <0.50 40.7 40.7 39.3 39.0 ug/L EPA 8260B 7/9/09 96.5 95.7 0.824 70-130 25 <br /> Tert-Butanol 69217-05 <5.0 201 201 207 207 ug/L EPA 82606 7/9/09 103 103 0.168 70-130 25 <br /> Toluene 69217-05 <0.50 40.1 40.1 40.0 39.5 ug/L EPA 82606 7/9/09 99.8 98.5 1.35 70-130 25 <br /> Lead 69217-07 <0.0050 0.400 0.400 0.385 0.387 mg/L EPA 6010B 7/13/09 96.0 96.6 0.621 75-125 20 <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />