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Report Number., 21416 <br /> QC Report : Matrix Spike)Matrix Spike Duplicate Date : 7/31/2001 <br /> Project Name : 341 East Main Street, <br /> Project-Number: 243-0324 <br /> i <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 Recay. Recov. Diff. Limit Limit <br /> Spike Recovery Data <br /> Benzene 21392-01 8.0 39.3 39.1 49.0 53.7 ug/L EPA 82606 7125/2001104 117 11.5 70-130 25 <br /> Toluene 21392-01 16 39.3 39.1 56.4 65.1 ug/L EPA 8260B 712512001102 124 20.3 70-130 25 <br /> Tert-Butanol 21392-01 64 196 195 262 254 ug/L EPA 82606 712512001101 97.4 3.27 70-130 25 <br /> Methyl-t-Butyl Ether 21392-01 140 39.3 39.1 201 236 ug/L EPA 82606 7125/2001168 260 43.0 70-130 25 <br /> Approved By: J el Kiff ' <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 - <br />