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SReport Number: 2& <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date 8123101 <br /> Project Name 3785 Santa Rosa Ave, <br /> Project Number. 243-0763-003 <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 Anal ed Recov Recov Diff Limit Limit <br /> Spike Recovery Data <br /> Benzene 21770-01 <0,50 18 6 18 5 18.3 181 ug/L EPA 8260E 8/16/01 986 979 0 687 70-130 25 <br /> Toluene 21770-01 <0 50 186 18.5 186 186 ug/L EPA 82608 8116101 100 101 0 573 70-130 25 <br /> Tert-Butanol 21770-01 1100 92,9 92 5 1270 1160 ug/L EPA 8260B 8116/01 137 188 152 70-130 25 <br /> I <br /> Methyl-t-Butyl Ether 21770-01 <0 50 186 185 19.1 196 ug/L EPA 82608 8116/09 103 106 2 92 70-130 25 <br /> I <br /> K1FF ANALYTICAL, LLC Approved 8y J I Kill <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br /> I <br />