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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 /> Methylene Chloride <br /> 75029-07 <5.0 40.0 40.0 37.1 36.3 ug/L EPA 8260B 10/21/10 92.7 90.8 2.07 70.0-130 25 <br /> Naphthalene <br /> 75029-07 <0.50 40.0 40.0 39.1 38.3 ug/L EPA 8260B 10/21/10 97.7 95.7 2.12 70.0-130 25 <br /> O-Xylene <br /> 75029-07 <0.50 40.0 40.0 39.4 38.8 ug/L EPA 8260B 10/21/10 98.4 97.0 1.52 79.7-120 25 <br /> P + M Xylene <br /> 75029-07 <0.50 40.0 40.0 37.4 36.8 ug/L EPA 8260B 10/21/10 93.6 92.0 1.68 76.8-120 25 <br /> Styrene <br /> 75029-07 <0.50 40.0 40.0 39.8 39.2 ug/L EPA 8260B 10/21/10 99.4 98.1 1.40 70.0-130 25 <br /> Tert-Butanol <br /> 75029-07 <5.0 200 200 189 190 ug/L EPA 8260B 10/21/10 94.5 95.1 0.658 80-120 25 <br /> Tert-amyl-methyl ether <br /> 75029-07 <0.50 40.2 40.2 39.9 38.5 ug/L EPA 8260B 10/21/10 99.1 95.6 3.57 78.9-120 25 <br /> Tetrachloroethene <br /> 75029-07 <0.50 40.0 40.0 37.2 36.8 ug/L EPA 8260B 10/21/10 93.0 92.1 0.932 77.0-120 25 <br /> Toluene <br /> 75029-07 <0.50 40.0 40.0 36.9 36.4 ug/L EPA 8260B 10/21/10 92.2 91.1 1.23 80-120 25 <br /> Trichloroethene <br /> 75029-07 <0.50 40.0 40.0 37.7 37.1 ug/L EPA 8260B 10/21/10 94.3 92.8 1.58 80-120 25 <br /> v <br /> co <br /> 0 <br /> 0 <br /> 0 <br /> rn <br /> CO <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />