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II <br /> 4 Report Number 31343 <br /> QC Report Matrix Spike/Matrix Spike Duplicate II Date 2/12/2003 <br /> f i <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 If Value Units Method Analyzed Recov Recov, Diff Limit Limit <br /> Benzene 31343-01 <0 50 400 400 41 2 403 uglL EPA 82606 217103 103 101 206 70-130 25 <br /> Toluene 31343-01 <0 50 400 400 374 366 uglL EPA 82606 217103 93 6 914 2 35 70-130 25 <br /> Tert-Butanol 31343-01 <5 0 200 200 197 199 uglL EPA 8260B 217103 984 996 1 19 70-130 25 <br /> Methyl-t-Butyl Ether 31343-01 <0 50 400 400 38 8 38 5 uglL EPA 8260B 217103 97 0 96 2 0 880 70-130 25 <br /> i <br /> I � <br /> i <br /> �I f <br /> ' 1 <br /> i I <br /> I <br /> I i j <br /> 1 <br /> I <br /> f <br /> KIFF ANALYTICAL, LLC Approved By J( 1 Kiff <br /> 2795 2nd St, Suite 300 D w <br /> A 95616 530-297-4800 V <br /> k <br />