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�- MW <br /> Report Number331 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 6/10/2003 <br /> Project Name T & T Trucking <br /> Project Number 21417-001 <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 /> Tert-Butanol 33128-01 <5 0 200 200 199 195 uglL EPA 8260B 5119103 994 975 1 93 70-130 25 <br /> Methyl-t-Butyl Ether 33128-01 8 5 400 400 476 480 uglL EPA 82606 5119103 978 988 1 07 70-130 25 <br /> Benzene 33158-03 44 400 400 444 440 uglL EPA 8260B 5117103 100 990 125 70-130 25 <br /> Toluene 33158-03 <0 50 400 400 398 39 9 uglL EPA 82606 5/17103 994 997 0 276 70-130 25 <br /> Tert-Butanol 33158-03 96 200 200 215 218 ug/L EPA 82606 5117103 103 104 132 70-130 25 <br /> Methyl-t-Butyl Ether 33158-03 33 400 400 758 767 ug/L EPA 8260E 5117103 106 108 2 15 70-130 25 <br /> I <br /> Approved By J y I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />