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i • � <br /> Report Number 12124 <br /> QC Report Method Spikes/ Method Spike Duplicates Date 08/26/98 <br /> Project Name Tosco 5417, 1700 E. <br /> Project Number 911-007 1 B <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 /> Soil Spike Recovery Data <br /> Benzene Blank <0 0050 00500 00500 00457 00465 mg/Kg EPA 82608 08/26/98 91 4 930 176 70-130 25 <br /> Toluene Blank <0 0050 00500 00500 00485 00479 mg/Kg EPA 8260B 08/26/98 969 958 114 70-130 25 <br /> i <br /> � {C <br /> KIFF ANALYTICAL, LLC Approved By Jo Kill <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />