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0 0 Report Number : 244 <br /> QC Report : Matrix:Spike/Matrix Spike Duplicate Date : 1/17/2002 <br /> Project Name : 341 East Main Street, <br /> Project Number: 0,20107-JB 1 <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 24283-01 <0.50 39.5 40.3 38.0 36.8 ug/L EPA 8260E 11121200296.0 91.4 4.99 70-130 25 <br /> Toluene 24283-01 <0.50 39.5 40.3 38.2 37.4 ug/L EPA 8260E 11121200296.7 92.8 4.04 70-130 25 <br /> Tert-Butanol 24283-01 X5.0 198 202 198 204 ug/L EPA 8260E 111212002100 101 0.956 70-130 25 <br /> Methyl-t-Butyl Ether 24283-01 <0.50 39.5 40.3 33.9 34.1 ug/L EPA 8260E 11121200285.8 84.7 1.35 70-130 25 <br /> I <br /> Approved By: J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />