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• 0 Report Number 24 <br /> QC Report • Matrix Spike/Matrix Spike Duplicate Date 2/14/2002 <br /> Project Name 4315 Waterloo Road, <br /> Project Number 020205-EB1 <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 Anal ed Recov Recov Diff Limit Limit <br /> Benzene 24682-01 3 8 400 400 455 445 ug/L EPA 82608 211012002104 102 245 70-130 25 <br /> Toluene 24682-01 <0 50 400 400 408 381 ug/L EPA 8260B 211012002102 953 670 70-130 25 <br /> Tert-Butanol 24682-01 1500 200 200 1720 1720 ug/L EPA 82608 2110/200290 3 918 156 70-130 25 <br /> Methyl-t-Butyl Ether 24682-01 1100 400 400 1200 1070 ug/L EPA 8260E 2110/2002176 000 200 70-130 25 <br /> i <br /> Approved By J I Kiff <br /> KfI=P ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />