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Report Number : 75042 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 10/26/2010 <br /> Project Name : Parcel #2A - 4Q10 Monitoring and Sampling <br /> Project Number : 211402828.300.250 <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 /> O-Xylene <br /> 75029-05 <0.50 40.0 40.0 39.2 38.6 ug/L EPA 8260B 10/21/10 98.0 96.6 1.44 79.7-120 25 <br /> P + M Xylene <br /> 75029-05 <0.50 40.0 40.0 38.6 38.5 ug/L EPA 8260B 10/21/10 96.4 96.4 0.0453 76.8-120 25 <br /> Styrene <br /> 75029-05 <0.50 40.0 40.0 40.5 40.4 ug/L EPA 8260B 10/21/10 101 101 0.274 70.0-130 25 <br /> Tert-Butanol <br /> 75029-05 150 200 200 343 341 ug/L EPA 8260B 10/21/10 94.9 93.7 1.28 80-120 25 <br /> Tert-amyl-methyl ether <br /> 75029-05 <0.50 40.2 40.2 39.6 38.5 ug/L EPA 8260B 10/21/10 98.6 95.6 3.02 78.9-120 25 <br /> Tetrachloroethene <br /> 75029-05 <0.50 40.0 40.0 38.8 36.9 ug/L EPA 8260B 10/21/10 96.9 92.4 4.78 77.0-120 25 <br /> Toluene <br /> 75029-05 <0.50 40.0 40.0 39.6 38.9 ug/L EPA 8260B 10/21/10 99.1 97.2 1.93 80-120 25 <br /> Trichloroethene <br /> 75029-05 <0.50 40.0 40.0 39.0 37.5 ug/L EPA 8260B 10/21/10 97.4 93.8 3.71 80-120 25 <br /> Trichlorofluoromethane <br /> 75029-05 <0.50 40.0 40.0 38.7 37.0 ug/L EPA 8260B 10/21/10 96.7 92.6 4.25 70.0-130 25 <br /> Vinyl Chloride <br /> 75029-05 <0.50 40.0 40.0 35.9 34.7 ug/L EPA 8260B 10/21/10 89.8 86.7 3.52 42.1-138 25 <br /> v <br /> co <br /> N <br /> O <br /> O <br /> 67 <br /> CO <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />