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� rr�.r r. r� err r r � rye r r ■r <br /> 4r <br /> Report Number 11951 <br /> QC Report Method Spikest Method Spike Duplicates Date 07/22/98 <br /> Project Name Newark Sierra I 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 Duo 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 /> Sod Spike Recovery Data <br /> Toluene Blank <0 0050 00401 00401 00399 00404 mg/Kg EPA 8020 07/21/98 996 101 120 70-130 25 <br /> Ethylbenzene Blank <0 0050 000990 000990 00107 00108 mg/Kg EPA 8020 07/21/98 108 109 136 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By oel Kill <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />