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qw w RW w qw w <br /> Report Number 24719 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 2/25/2002 <br /> Project Name Joe's Truck Plaza <br /> Project Number 9627-001-7 <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 24719-18 <0 0050 00397 00396 00370 00353 mg/Kg EPA 82608 211712002931 891 442 70-130 25 <br /> Toluene 24719-18 <0 0050 00397 00396 00366 00352 mg/Kg EPA 8260B 21171200292 2 88 9 3 56 70-130 25 <br /> Tert-Butanol 24719-18 <0 0050 0198 0198 0171 0169 mg/Kg EPA 8260B 21171200286 2 85 6 0 751 70-130 25 <br /> Methyl-t-Butyl Ether 24719-18 <0 0050 00397 00396 00375 00363 mg/Kg EPA 8260B 21171200294 4 916 3 01 70-130 25 <br /> Approved By Joel Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-2974800 <br />