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Report Number : 82960 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 10/24/2012 <br /> Project Name : Parcel 2A - 4Q12 Monitoring and Sampling <br /> Project Number : 211602384.500.0802 <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 /> Benzene <br /> 82955-04 <0.50 40.0 40.0 39.6 38.9 ug/L EPA 8260B 10/18/12 98.9 97.3 1.63 80-120 25 <br /> Ethylbenzene <br /> 82955-04 <0.50 40.0 40.0 40.8 40.3 ug/L EPA 8260B 10/18/12 102 101 1.19 80-120 25 <br /> Methyl-t-butyl ether <br /> 82955-04 <0.50 40.1 40.1 37.1 37.1 ug/L EPA 8260B 10/18/12 92.7 92.6 0.0793 69.7-121 25 <br /> P + M Xylene <br /> 82955-04 <0.50 40.0 40.0 38.5 38.7 ug/L EPA 8260B 10/18/12 96.2 96.8 0.622 76.8-120 25 <br /> Tert-Butanol <br /> 82955-04 <5.0 201 201 196 194 ug/L EPA 8260B 10/18/12 97.6 96.6 1.05 80-120 25 <br /> Toluene <br /> 82955-04 <0.50 40.0 40.0 40.5 40.2 ug/L EPA 8260B 10/18/12 101 100 0.736 80-120 25 <br /> Benzene <br /> 82955-06 4.8 40.0 40.0 45.7 43.6 ug/L EPA 8260B 10/18/12 102 97.0 5.34 80-120 25 <br /> Ethylbenzene <br /> 82955-06 0.87 40.0 40.0 42.7 40.9 ug/L EPA 8260B 10/18/12 104 100 4.41 80-120 25 <br /> Methyl-t-butyl ether <br /> 82955-06 6.4 40.1 40.1 42.6 42.8 ug/L EPA 8260B 10/18/12 90.2 90.7 0.540 69.7-121 25 <br /> v <br /> CD <br /> 410 <br /> 0 <br /> w <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />