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i <br /> Report Number 46980 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate P P P I P Date 11/21/2005 <br /> l <br /> ' I <br /> Project Name QuickStop 76 <br /> Project Number 7076 42 <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 /> Benzene 46940-07 <0 50 400 400 394 385 ug/L EPA 8260E 11/97/05 984 96 3 214 70-130 25 <br /> Toluene 46940-07 <0 50 1400 400 382 372 ug/L EPA 8260E 11/17/05 955 931 2 53 70-130 25 <br /> Tert-Butanol 46940-07 <50 200 200 209 209 ug/L EPA 8260E 11/17/05 104 104 0 163 70-130 25 <br /> Methyl-t-Butyl Ether46940-07 <0 50 i40 0 400 400 396 'ug/L EPA 8260E 11/17/05 100 990 0 952 70-130 25 <br /> I � <br /> i <br /> i <br /> Approved By Jae iff <br /> KIFF ANAL AL, LLC . ' <br /> 2795 2nd St, Smite 30D DIs <br /> , CA 95616 530-297-4800 <br />