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Report Number: 22066 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 9/20/2001 <br /> Project Name : 1267 Country Club <br /> Project Number: 010829-C1 <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 Rercent Recov. Diff. <br /> Parameter Sam le Value Level Level Valueli Value Units Method Analyzed Recov. Recov. Diff. Limit Limit <br /> Spike Recovery Data I� <br /> Benzene 22076-01 <0.50 19.1 20.0 18.3 19.4 ug/L EPA 8260E 919!2001 95.6 97.0 1.48 70-130 25 <br /> Toluene 22076-01 <0.50 19.1 20.0 18.3 19.3 ug/L EPA 82608 9/9/2001 95.9 96.6 0.701 70-130 25 <br /> 11 <br /> Tert-Butanol 22076-01 <5.0 95.6 100 99.1 108 ug/L EPA 8260B 9/9/2001 104 108 3.73 70-130 25 <br /> Methyl-t-Butyl Ether 22076-01 0.91 19.1 20.0 20.6 22.1 ug/L EPA 8260B 9/9/2001 103 106 2.84 70-130 25 <br /> i <br /> i <br /> Approved By: J ' IICiff <br /> (IFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D 0s, CA 95616 530-297-4800 <br />