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! i � <br /> Report Number 19020 <br /> QC Report• Matrix Spike/Matrix Spike Duplicate Date 01/30/2001 <br /> i <br /> Project Name 3725 South Tracy Blvd., <br /> Project Number 010123-C2 <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 /> Spike Recovery Data <br /> Benzene 19024-03 <0 50 233 247 222 22 8 ug/L EPA 82608 01126120095 3 923 316 70-130 25 <br /> Toluene 19024-03 <0 50 233 247 203 22 6 ug/L EPA 8260E 01126120087 0 915 500 70-130 25 <br /> Tert-Butanol 19024-03 8 0 233 247 52 5 773 ug/L EPA 8260E 011261200191 280 379 70-130 25 <br /> Methyl-t-Butyl Ether 19024-03 1100 233 247 1200 1200 ug1L EPA 8260B 011261200534 482 103 70-130 25 <br /> )A <br /> Approved By J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />