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Report Number: 69112 <br /> QC Report: Matrix Spike/ Matrix Spike Duplicate Date : 07/08/2009 <br /> Project Name : Sara Lee - Lincoln Street (Well Installations) <br /> Project Number: 62403335 - 024522 <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 /> Lead 69062-07 11 50.0 50.0 56.1 52.8 mg/Kg EPA 6010B 7/2/09 89.6 83.0 6.06 75-125 20 <br /> Lead 69108-02 <0.0050 0.400 0.400 0.395 0.398 mg/L EPA 6010B 7/6/09 98.6 99.2 0.706 75-125 20 <br /> 1,2-Dibromoethane 69077-01 <0.0050 0.0406 0.0404 0.0270 0.0265 mg/Kg EPA 8260B 7/1/09 66.4 65.6 1.17 70-130 25 <br /> 1,2-Dichloroethane 69077-01 <0.0050 0.0408 0.0405 0.0321 0.0319 mg/Kg EPA 8260B 7/1/09 78.8 78.7 0.162 70-130 25 <br /> Benzene 69077-01 <0.0050 0.0406 0.0404 0.0268 0.0273 mg/Kg EPA 8260B 7/1/09 66.1 67.7 2.38 70-130 25 <br /> Methyl-t-butyl ether 69077-01 <0.0050 0.0407 0.0405 0.0305 0.0303 mg/Kg EPA 82606 7/1/09 74.8 74.9 0.0814 70-130 25 <br /> Tert-Butanol 69077-01 <0.0050 0.201 0.200 0.171 0.175 mg/Kg EPA 8260B 7/1/09 85.0 87.2 2.55 70-130 25 <br /> Toluene 69077-01 <0.0050 0.0401 0.0399 0.0233 0.0239 mg/Kg EPA 8260B 7/1/09 58.1 60.0 3.20 70-130 25 <br /> 1,2-Dibromoethane 69095-04 <0.50 39.4 40.4 39.0 39.2 ug/L EPA 8260B 7/1/09 98.9 97.1 1.91 70-130 25 <br /> 1,2-Dichloroethane 69095-04 <0.50 39.6 40.5 40.0 40.4 ug/L EPA 82608 7/1/09 101 99.7 1.28 70-130 25 <br /> Benzene 69095-04 <0.50 39.4 40.4 39.1 39.0 ug/L EPA 8260B 7/1/09 99.3 96.8 2.54 70-130 25 <br /> Methyl-t-butyl ether 69095-04 <0.50 39.5 40.5 36.0 33.7 ug/L EPA 8260B 7/1/09 91.2 83.2 9.18 70-130 25 <br /> Tert-Butanol 69095-04 <5.0 196 200 197 204 ug/L EPA 8260B 7/1/09 101 102 1.07 70-130 25 <br /> Toluene 69095-04 <0.50 38.9 39.9 38.9 38.8 ug/L EPA 8260B 7/1/09 100 97.4 2.61 70-130 25 <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />