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i • i <br /> Report Number 26986 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 6124102 <br /> Protect Name GUEVERA <br /> Protect Number 3490 <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 26986-01 <0 50 400 400 426 403 ug/L EPA 8260B 6/21102 106 101 543 70-130 25 <br /> Toluene 26986-01 <0 50 400 400 378 364 ug/L EPA 82608 6/21102 946 909 394 70-130 25 <br /> Tert-Butanol 26986-01 <50 200 200 192 193 ug/L EPA 8260B 6121/02 958 963 0 500 70-130 25 <br /> Methyl-t-Butyl Ether 26986-01 <0 50 400 400 360 354 ug/L EPA 82606 6121/02 900 886 162 70-130 25 <br /> h <br /> Approved By Joel Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 Y <br />