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• • 0 <br /> Report Number 37500 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 3/22/2004 <br /> Project Name BARNES TRUCKING <br /> Project Number ZB178C <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 37508-06 <0 50 400 400 403 393 ug/L EPA 82600 3118104 101 98 2 2 68 70-130 25 <br /> Toluene 37508-06 <0 50 400 400 392 38 5 ug/L EPA 8260B 3118104 979 962 178 70-130 25 <br /> Tert-Butanol 37508-06 <5 0 200 200 200 202 ug/L EPA 82606 3118104 100 101 0 552 70-130 25 <br /> Methyl-t-Butyl Ether 37508-06 10 400 400 499 49 8 ug/L EPA 8260B 3118104 982 98 0 0 235 70-130 25 <br /> Benzene 37500-06 18 400 400 608 586 ug/L EPA 8260B 3118104 106 100 530 70-130 25 <br /> Toluene 37500-06 24 400 400 64 7 64 0 ug/L EPA 8260B 3118104 102 101 1 74 70-130 25 <br /> Tert-Butanol 37500-06 <5 0 200 200 208 210 ug/L EPA 82606 3118104 104 105 131 70-130 25 <br /> Methyl-t-Butyl Ether 37500-06 <0 50 400 400 382 391 ug/L EPA 82606 3118/04 956 977 2 12 70-130 25 <br /> i <br /> Approved By 1J l <br /> KIFF ANALYTICAL, LLC f <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />