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Report Number : 73822 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 07/27/2010 <br /> Project Name : Parcel #2A - 3Q10 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 /> Methyl-t-butyl ether <br /> 73814-02 <0.50 40.0 40.0 39.1 38.2 ug/L EPA 8260B 7/21/10 97.8 95.6 2.30 69.7-121 25 <br /> Methylene Chloride <br /> 73814-02 <5.0 40.0 40.0 37.2 35.2 ug/L EPA 8260B 7/21/10 93.0 87.9 5.61 70.0-130 25 <br /> Naphthalene <br /> 73814-02 <0.50 40.0 40.0 33.8 31.8 ug/L EPA 8260B 7/21/10 84.4 79.4 6.12 70.0-130 25 <br /> O-Xylene <br /> 73814-02 <0.50 40.0 40.0 39.9 35.8 ug/L EPA 8260B 7/21/10 99.8 89.5 10.9 79.7-120 25 <br /> P + M Xylene <br /> 73814-02 <0.50 40.0 40.0 38.6 34.6 ug/L EPA 8260B 7/21/10 96.5 86.5 10.9 76.8-120 25 <br /> Styrene <br /> 73814-02 <0.50 40.0 40.0 39.6 28.1 ug/L EPA 8260B 7/21/10 99.0 70.3 33.9 70.0-130 25 <br /> Tert-Butanol <br /> 73814-02 <5.0 200 200 199 203 ug/L EPA 8260B 7/21/10 99.3 101 2.09 80-120 25 <br /> Tert-amyl-methyl ether <br /> 73814-02 <0.50 40.2 40.2 38.9 38.7 ug/L EPA 8260B 7/21/10 96.8 96.3 0.551 78.9-120 25 <br /> Tetrachloroethene <br /> 73814-02 <0.50 40.0 40.0 36.9 34.8 ug/L EPA 8260B 7/21/10 92.3 87.0 5.93 77.0-120 25 <br /> Toluene <br /> 73814-02 <0.50 40.0 40.0 37.6 35.6 ug/L EPA 8260B 7/21/10 94.0 89.0 5.45 80-120 25 <br /> v <br /> co <br /> 0 <br /> N <br /> O <br /> Cn <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />