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Report Number: 65577 <br /> .'QC Repott:'Matrix Spikel'Matrk Spike Dupiicate Date : 11/04/2008 <br /> Project Name: Tracy Municipal Airport <br /> Project Number: <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 /> TPH as Diesel 6557401 <1.0 20.0 20.0 18.6 18.5 mg/Kg M EPA 8015 10/31/08 92.9 .92'.3 0.620 60-140 25 <br /> TPH as Diesel 65620-01 2.1 20.0 20.0 17.8 19.0 mg/Kg M EPA 8015 11/3/08 80.5 85.8 6.34 60-140 25 <br /> 1,2-Dichloroethane 65572-03 <0.0050 0.0375 0.0376 -1 0.0348 0.0360 m9'/Kg EPA 82606 10/30/08 92.9 95.6 2.94 70-130 25 <br /> Benzene 65572-03 <0.0050 0.0384 0.0384 0.0346 0.0350 mg/Kg EPA 8260E 10/30/08- 90.1 91A 1.13 70-1-30 25 <br /> Methyl-t-butyl.ether 65572-03 .<0.0050 0.0378 0.0379 , 0.0354 0.0352 mg/Kg EPA 8266B 10/30/08 93.6 92.7 0.912 70-130 25 <br /> Tert-Butanol 65572-03 <0.0050 0.191 0.192 0.169 . 0.170 mg/Kg EPA 8260E 10/30/08 88.5 88.6 0.0804 70-130 25 <br /> Toluene 65572-03, <0.0050 0.0378 0.0379 0.0362 0.0362 mg/Kg EPA 82608 10/30/08 95.8 95.5' 0.369 70-130 25 <br /> i <br /> I <br /> i <br /> .I <br /> a <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />