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i <br /> t <br /> Report Number 30564 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/30/02 <br /> Project Name Quik Stop # 39 <br /> Project Number 7039 14 <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 30586-03 150 400 400 195 186 ug/L EPA 8260B 12/26/02 102 804 235 70-130 25 <br /> Toluene 30586-03 1 4 400 400 430 41 1 ug/L EPA 8260B 12/26/02 104 991 4 83 70-130 25 <br /> Tert-Butanol 30586-03 88 200 200 290 286 ug/L EPA 8260B 12/26/02 101 989 205 70-130 25 <br /> Methyl-t-Butyl Ether 30586-03 1000 400 400 1080 1040 ug/L EPA 82606 12/26/02 112 151 152 70-130 25 <br /> i <br /> w � <br /> Approved By Jbel Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St Suite 300 Davis, CA 95616 530-297-4800 I� <br /> I <br />