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{ I <br /> Report Number 29820 <br /> QC Report Matrix Spike[Matrix Spike Duplicate Date 11/21/2002 <br /> it <br /> Project Name Ranch Market - Monthly <br /> Project Number 77OT 43$27.01.0002 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> SpikeSpiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup 1, Sample Sample Analysis Date Percent Percent Percent Recov Diff <br /> Parameter Sample Value Level Level i Value 11 Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 29858-03 <0 50 400 400 j' 3�8 5 38 1 ug/L EPA 8260E 11/20/02 96 4 95 3 1 10 70-130 25 <br /> Toluene 29858-03 <0 50 400 400 j 37 4 379 ug/L EPA 82605 11/20/02 935 94 7 1 28 70-130 25 <br /> Tert-Butanol 29858-03 <5 0 200 200 205 217 ug/L EPA 82608 11/20/02 103 108 542 70-130 25 <br /> Methyl-t-Butyl Ether 29858-03 <0 50 400 400 3I91 404 ug/L EPA 82608 11/20/02 977 101 330 70-130 25 <br /> I <br /> I <br /> I <br /> 11 <br /> I i <br /> I <br /> ' I <br /> j <br /> E <br /> I <br /> ill I <br /> Approved By Joel Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St,'ISuite 300 s, CA 95616 530-297-4800 • <br /> l <br />