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� <br /> QC Report Matrix Spike/Matrix Spike Duplicate Report Number 26711Date 6/6/2002 <br /> Project Name Chevron 9-57751301 W. <br /> Project Number 77CH 43452.00.0550 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> f 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 /> Benzene 26655-04 <0 50 400 400 36 9 364 Ug/L EPA 8260B 614102 92 2 909 142 70-130 25 <br /> Toluene 26655-04 <0 50 400 400 370 365 uglL EPA 8260B 614102 925 91 2 142 70-130 25 <br /> Ter#-Butanol 26655-04 11 200 200 193 194 uglL EPA 8260B 614102 909 918 0 947 70-130 25 <br /> Methyl-t-Butyl Ether 26655-04 30 400 400 772 761 uglL EPA 82606 614102 118 116 229 70-130 25 <br /> Benzene 26658-01 <0 50 400 400 41 8 400 uglL EPA 82608 614102 104 100 445 70-130 25 <br /> Toluene 26658-01 <0 50 400 400 400 382 uglL EPA 82606 614102 999 954 458 70-130 25 <br /> Tert-Butanol 26658-01 <50 200 200 213 215 uglL EPA 8260B 614102 106 108 1 08 70-130 25 <br /> Methyl-t-Butyl Ether 26658-01 0 63 400 400 31 0 307 uglL EPA 8260B 614102 760 752 0 959 70-130 25 <br /> M <br /> I <br /> t <br /> KIFF ANALYTICAL, LLC <br /> Approved By J6ei Kill <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 U <br />