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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 /> Isopropyl benzene <br /> 73815-04 <0.50 40.0 40.0 40.6 38.6 ug/L EPA 8260B 7/22/10 101 96.5 4.97 70.0-130 25 <br /> Methanol <br /> 73815-04 100 1000 1000 1010 1010 ug/L EPA 8260B 7/22/10 90.2 90.2 0.0213 53.2-147 25 <br /> Methyl-t-butyl ether <br /> 73815-04 <0.50 40.0 40.0 39.5 38.7 ug/L EPA 8260B 7/22/10 98.8 96.7 2.12 69.7-121 25 <br /> Methylene Chloride <br /> 73815-04 <5.0 40.0 40.0 39.9 38.4 ug/L EPA 8260B 7/22/10 99.8 95.9 3.90 70.0-130 25 <br /> Naphthalene <br /> 73815-04 <0.50 40.0 40.0 41.0 40.4 ug/L EPA 8260B 7/22/10 102 101 1.56 70.0-130 25 <br /> O-Xylene <br /> 73815-04 <0.50 40.0 40.0 40.9 39.3 ug/L EPA 8260B 7/22/10 102 98.3 4.03 79.7-120 25 <br /> P + M Xylene <br /> 73815-04 <0.50 40.0 40.0 40.8 39.0 ug/L EPA 8260B 7/22/10 102 97.5 4.69 76.8-120 25 <br /> Styrene <br /> 73815-04 <0.50 40.0 40.0 42.5 40.4 ug/L EPA 8260B 7/22/10 106 101 4.97 70.0-130 25 <br /> Tert-Butanol <br /> 73815-04 <5.0 200 200 202 201 ug/L EPA 8260B 7/22/10 101 101 0.194 80-120 25 <br /> Tert-amyl-methyl ether <br /> 73815-04 <0.50 40.2 40.2 41.2 40.3 ug/L EPA 8260B 7/22/10 102 100 2.26 78.9-120 25 <br /> v <br /> 41 m <br /> cn <br /> 0 <br /> N <br /> O <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />