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r • <br /> Report Number. 20914 <br /> I <br /> Qc Report : Matrix Spike/Matrix Spike Duplicate Date : 7/5/2001 <br /> Project Name : 3,41 East Main Street, <br /> Project Number: 243-0324 <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 /> Spike Recovery Data <br /> Benzene 20914-01 <0.50 24.1 24.4 23.0 22.8 ug1L EPA 82608 61221200195.6 93.6 2.07 70-130 25 <br /> Toluene 20914-01 <0.50 24,1 24.4 23.0 23.1 ug/L EPA 8260E 6122/200195.3 94.6 0.737 70-130 25 <br /> Tert-Butanol 20914-01 <5.0 24.1 24.4 24.2 24.0 ug/L EPA 82608 612212001100 98.6 1.89 70-130 25 <br /> Methyl-t-Butyl Ether-20914-01 14 24.1 24.4 34.8 34.3 ug/L EPA 8260E 61221200185.6 82.6 3.50 70-130 25 <br /> I <br /> Approved By: J&&I Kiff <br /> K1FF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />