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Report Number : 72439 <br /> QC Report : Laboratory Control Sample (LCS) Date : 03/31/2010 <br /> Project Name : HPI Pilot Study <br /> Project Number : 185702199.200.0003 <br /> LCS <br /> LCS Percent <br /> Spike Analysis Date Percent Recov. <br /> Parameter Level Units Method Analyzed Recov. Limit <br /> Chromium 0.400 mg/L EPA 6010B 3/30/10 108 85-115 <br /> Vanadium 0.400 mg/L EPA 6010B 3/30/10 103 85-115 <br /> Benzene 40.0 ug/L EPA 8260B 3/25/10 102 80-120 <br /> Diisopropyl ether 39.5 ug/L EPA 8260B 3/25/10 103 80-120 <br /> Ethanol 100 ug/L EPA 8260B 3/25/10 103 55.1-159 <br /> Ethyl-tert-butyl ether 39.9 ug/L EPA 8260B 3/25/10 99.0 76.5-120 <br /> Ethylbenzene 40.0 ug/L EPA 8260B 3/25/10 110 80-120 <br /> Methanol 1000 ug/L EPA 8260B 3/25/10 77.1 53.2-147 <br /> Methyl-t-butyl ether 40.2 ug/L EPA 8260B 3/25/10 87.2 69.7-121 <br /> P + M Xylene 40.0 ug/L EPA 8260B 3/25/10 103 76.8-120 <br /> Tert-Butanol 199 ug/L EPA 8260B 3/25/10 106 80-120 <br /> Tert-amyl-methyl ether 40.8 ug/L EPA 8260B 3/25/10 99.9 78.9-120 <br /> Toluene 40.0 ug/L EPA 8260B 3/25/10 101 80-120 <br /> Benzene 40.0 ug/L EPA 8260B 3/29/10 97.8 80-120 <br /> Diisopropyl ether 39.5 ug/L EPA 8260B 3/29/10 98.4 80-120 <br /> Ethanol 100 ug/L EPA 8260B 3/29/10 93.5 55.1-159 <br /> Ethyl-tert-butyl ether 39.9 ug/L EPA 8260B 3/29/10 96.2 76.5-120 <br /> Ethylbenzene 40.0 ug/L EPA 8260B 3/29/10 106 80-120 <br /> Methanol 1000 ug/L EPA 8260B 3/29/10 83.8 53.2-147 <br /> Methyl-t-butyl ether 40.2 ug/L EPA 8260B 3/29/10 86.1 69.7-121 <br /> v <br /> CD <br /> 0 <br /> 0 <br /> w <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />