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v <br /> Report Number 11605 <br /> QC Report Method Spikes/ Method Spike Duplicates Date 05/22/98 <br /> Project Name Clearwater Gp, Inc <br /> Project Number 18491 <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 /> Water Spike Recovery Data <br /> 1,1-Dichloroethene Blank <0 50 500 500 51 7 50 0 ug/L EPA 8260E 05/21/98 103 100 3 34 70-130 25 <br /> Benzene Blank <0 50 50 0 Soo 51 1 499 ug/L EPA 8260E 05/21/98 102 99 8 238 70-130 25 <br /> Trichloroethene Blank <0 50 500 500 523 500 ug/L EPA 8260E 05/21198 105 100 447 70-130 25 <br /> Toluene Blank <0 50 500 500 512 49 6 ug/L EPA 8260B 05/21/98 102 99 2 304 70-130 25 <br /> Chlorobenzene Blank <0 50 500 500 502 488 ug/L EPA 8260E 05/29/98 100 977 2 84 70-130 25 <br /> I <br /> Approved By 1 Kiff <br /> KIFF ANALYTICAL, LLC <br />