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.r �■�rir r r r r■� �■rr r r r M M r r r Im <br /> Report Number 11931 <br /> 4C 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 /> Sofl Spike Recovery Data <br /> TPH as Diesel Blank <1 0 200 200 184 180 mglKg M EPA 8015 07/16/98 921 902 209 60-110 25 <br /> r <br /> iY <br /> Bykel <br /> KIFF ANALYTICAL, LLC Approved B <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />