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Report Number 11204 <br /> QC Report Method Spikes/Method Spike Duplicates Date 03/09/98 <br /> Project Name 1444 Mariposa <br /> Project Number 2938.03 <br /> Siked <br /> Duplicate Spiked Spiked #e Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike DUD Sample Sample Analysts 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 /> Toluene Blank <0 50 358 358 382 371 ug/L EPA 8020 03/05/98 107 104 281 70-130 25 <br /> Ethylbenzene Blank <0 50 800 800 7 44 7 22 ug/L EPA 8020 03/05/98 930 902 308 70-130 25 <br /> TPH as Gasoline Blank <50 500 500 512 493 ug/L M EPA 8015 03/05/98 102 986 384 70-130 25 <br /> i <br /> �:g f ` W r i <br />