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• i • <br /> Report Number 47603 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/27/2005 <br /> i <br /> Project Name New West Petroleum <br /> Project Number NWP01 004 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked S, le Spike Dup Sample Sample Analys,s Date Percent Percent Percent Recov Diff <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 47507-05 <0 50 400 400 41 1 394 ug/L EPA 82606 12/22/05 103 98 6 4 16 70-130 25 <br /> Toluene 47507-05 <0 50 400 400 409 39 0 ug/L EPA 82606 12/22/05 102 97 6 472 70-130 25 <br /> Tert-Butanol 47507-05 <5 0 200 200 205 193 ug/L EPA 8260B 12/22/05 102 967 589 70-130 25 <br /> Methyl-t-Butyl Ether47507-05 <0 50 400 400 377 368 ug/L EPA 82606 12/22/05 942 920 2 34 70-130 25 <br /> I <br /> I <br /> Approved By .JO iff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />