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iMM r MIMI M ■r ISM Mr r i <br /> Report Number 11931 <br /> QC Report• Method Spikes/Method Spike Duplicates Date 07/21/98 <br /> Project Name Newark Sierra/Stockton <br /> Project Number 41017 <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 00451 00453 mg/Kg EPA 8260B 07/16/98 902 905 0 332 70-130 25 <br /> Toluene Blank <0 0050 00500 00500 00455 00452 mg/Kg EPA 8260B 07/16/98 910 904 0 662 70-130 25 <br /> h <br /> J <br /> KIFF ANALYTICAL, LLC Approved By I Kiff <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-2974800 <br />