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II Report Number 29549 <br /> n <br /> QC Report Matrix Spike/Matrix Spike Duplicate " Date 11/14/2002 <br /> Project Name Ranch Market-Monthly <br /> Project Number 770T 43627.01 0002 <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 IV Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 29549-01 <0 50 400 400 4f1 6 409 ug/L EPA 8260E 1115102 104 102 1 70 70-130 25 <br /> Toluene 29549-01 14 400 400 469 465 ug/L EPA 8260B 11/5102 114 113 0 861 70-130 25 <br /> Tert-Butanol 29549-01 58 200 200 210 210 ug/L EPA 82608 1115/02 102 102 0 117 70-130 25 <br /> Methyl-t-Butyl Ether 29549-01 <0 50 400 400 ,I 3r7 5 381 ug/L EPA 8260B 11/5102 936 952 164 70-130 25 <br /> ' Il <br /> i II <br /> { <br /> �I <br /> � 1 i <br /> t"tom <br /> i Approved By Joel Kiff <br /> KIFF ANALYTICAL, LLC ! <br /> 2795 2nd St,11 Suite 300 , CA 95616 530-297-4800 <br /> I <br />