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Report Number 40919 <br /> QC Report Matrix Spike! Matrix Spike Duplicate Date 11/12/2004 <br /> f Project Name Quik Stop 39 <br /> Project Number 7039.16 <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 /> -- a <br /> Benzene 40852-09 <0 0050 00392 00391 00319 00309 mg/Kg EPA 8260B 11/10/04 81 4 790 300 70-130 25 <br /> 11 <br /> Toluene 40852-09 <0 0050 00392 00391 00307 00301 mg/Kg EPA 82606 11/10/04 782 769 171 70-130 25 <br /> Methyl-t-Butyl Ether 40852-09 <0 0050 00392 I 00391 00346 00332 mg/Kg EPA 8260B 11/10/04 88 2 848 392 70-130 25 <br /> Benzene 40469-09 <0 0050 00382 00390 00361 00361 mg/Kg EPA 8260B 11112/04 943 927 1 71 70-130 25 <br /> Toluene 40469-09 <0 0050 00382 00390 00362 00366 mg/Kg EPA 8260B 11/12/04 946 940 0 618 70-130 25 <br /> Tert-Butanol 40469-09 <0 0050 0 � 91 0 195 0 172 0 177 mg/Kg EPA 8260B 11/12/04 902 909 0 726 70-130 25 <br /> Methyl-t-Butyl Ether 40469-09 <0 0050 00382 00390 00387 00383 mg/Kg EPA 82608 11/12/04 101 982 311 70-130 25 <br /> h <br /> Approved By Joe iff <br /> KIFF AN TICAL, LLC . <br /> �f F <br /> 2795 2nd St, Suite 300 avis, CA 95616 530-297-4800 <br /> I <br />