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Report Number : 63745 <br /> QC Report : Laboratory Control Sample (LCS) Date : 07/23/2008 <br /> Project Name : 7-Eleven Store #21756 <br /> Project Number : 77EL.21756.08 <br /> LCS . . y <br /> LCS Percent <br /> Spike Analysis Date Percent Recov. <br /> Parameter Level Units_ _ Method Analyzed Recov. Limit, <br /> Lead 50.0 Mg/Kg EPA 6010B 7118108 103 75-120 <br /> Benzene 0.0395 . mg/Kg - EPA 82606 7116108 94.4 70-130 <br /> Methyl-t-butyl ether 0.0394 mg/Kg N EPA 8260B . 7/16/08 92.0 70-130 <br /> Toluene T 0.0389 mg/Kg 'EPA 8260B 7116108 A 96.2 70-130 <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />