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s � � <br /> Report Number 12138 <br /> QC Report Method Spikes/Method Spike Duplicates Date 08/28/98 <br /> Project Name Circle K 1205 <br /> Project Number 911-005.1B <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 /> Sal Spike Recovery Data <br /> Benzene Blank <0 0050 00500 00500 00478 00481 mg/Kg EPA 8260E 08/26/98 956 962 0 563 70-130 25 <br /> Toluene Blank <0 0050 00500 00500 00486 00489 mg/Kg EPA 8260B 08/26/98 973 977 0 451 70-130 25 <br /> n <br /> Approved By .lb I Kiff <br /> KIFF ANALYTICAL, LLC J <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 1j <br />