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Report Number 38075 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 5/4/2004 <br /> Project Name SINGH <br /> Project Number 3254 <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 /> Benzene 38075-04 <0 50 400 400 410 406 ug/L EPA 82606 4129104 102 102 100 70-130 25 <br /> Toluene 38075-04 <0 50 400 400 394 377 ug1L EPA 8260B 4129104 98 4 94 3 427 70-130 25 <br /> Tert-Butanol 38075-04 <5 0 200 200 202 198 ug/L EPA 8260B 4129104 101 99 2 1 63 70-130 25 <br /> Methyl-t-Butyl Ether 38075-04 26 400 400 41 2 414 ug1L EPA 82606 4129104 96 6 972 0 589 70-130 25 <br /> Benzene 38075-01 0 80 400 400 48 3 469 ug1L EPA 8260B 4129104 119 115 305 70-130 25 <br /> Toluene 38075-01 <0 50 400 400 451 436 ug/L EPA 8260B 4/29104 113 109 330 70-130 25 <br /> Tert-Butanol 38075-01 11 200 200 207 195 ug1L EPA 8260B 4129104 980 91 8 6 52 70-130 25 <br /> Methyl-t-Butyl Ether 38075-01 8 8 400 400 495 484 ug/L EPA 8260B 4129104 102 991 261 70-130 25 <br /> I <br /> 1 <br /> Approved By Je 6j'hr ? <br /> KIFF ANALYTICAL, LLC I , 11 <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 V <br />