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F <br /> Report Number : 26107 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date : 511!2002 <br /> Project Name : 420 W. Kettleman Lane, <br /> Project Number: 020424-JB2 <br /> Spiked <br /> Duplicate Spiked Sppked to Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup. Sample Sample Analysis Date Percent <br /> Per <br /> Percent Recov. Diff; <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov. Recov. Diff. Limit Limit <br /> Benzene 26119-01 <0.50 40.0 40.0 36.3 36.1 ug/L EPA 8260B 4129102 90.8 90.2 0.635 70-130 .25 <br /> Toluene 26119-01 <0.50 40.0 40.0 36.2 36.1 ug/L EPA 8260B 4129102 90.4 90.3 0.138 70-130 25 <br /> Tert-Butanol 26119-01 <5.0 200 200 182 179 ug/L EPA 82608 4129102 91.2 89.7 1.69 70-130 25 <br /> Methyl-t-Butyl Ether 26119-01 <0.50 40.0 40.0 33.8 33.9 ug/L EPA 82608 4129102 84.5 84.8 0.413 70-130 25 <br /> Benzene 26109-01 <0.50 40.0 40.0 44.7 42.6 ug/L EPA 82606 4129102 112 106 4.65 70-130 25 <br /> Toluene 26109-01 <0.50 40.0 40.0 42.1 40.7 ug/L EPA 8260B 4129102 105 102 3.45 70-130 25 <br /> Tert-Butanol 26109-01 <5.0 200 200 201 206 ug/L EPA 8260B 4129/02 101 103 2.49 70-130 25 <br /> Methyl-t-Butyl Ether 26109-01 <0.50 40.0 40.0 46.2 45.2 ug/L EPA 8260B 4129102 115 113 2.04 70-130 25 <br /> 1 <br /> Approved By: J l Kiff w <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D vis, CA 95616 530-297-4800 �' <br />