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Report Number : 67889 <br /> QC Report : Laboratory Control Sample (LCS) Date : 04/15/2009 <br /> Project Name : Stockton Promenade - Edison Street <br /> Project Number : 7345.09 <br /> LCS <br /> LCS Percent <br /> Spike Analysis Date Percent Recov. <br /> Parameter Level Units Method Analyzed Recov. Limit <br /> Cadmium 50.0 mg/Kg EPA 6010B 3/30/09 100 85-115 <br /> Chromium 50.0 mg/Kg EPA 6010B 3/30/09 103 85-115 <br /> Lead 50.0 mg/Kg EPA 6010B 3/30/09 103 85-115 <br /> Nickel 50.0 mg/Kg EPA 6010B 3/30/09 104 85-115 <br /> Zinc 50.0 mg/Kg EPA 6010B 3/30/09 103 85-115 <br /> TPH as Diesel 20.0 mg/Kg M EPA 8015 3/30/09 78.7 70-130 <br /> 1,1-Dichloroethane 0.0404 mg/Kg EPA 8260B 3/26/09 90.9 70-130 <br /> 1,2-Dichloroethane 0.0401 mg/Kg EPA 8260B 3/26/09 89.8 70-130 <br /> Benzene 0.0391 mg/Kg EPA 8260B 3/26/09 95.0 70-130 <br /> Chlorobenzene 0.0396 mg/Kg EPA 8260B 3/26/09 93.1 70-130 <br /> Toluene 0.0399 mg/Kg EPA 8260B 3/26/09 94.0 70-130 <br /> Methyl-t-butyl ether 0.0405 mg/Kg EPA 8260B 3/26/09 85.0 70-130 <br /> Tert-Butanol 0.200 mg/Kg EPA 8260B 3/26/09 92.2 70-130 <br /> 1,1-Dichloroethane 40.6 ug/L EPA 8260B 3/28/09 96.6 70-130 <br /> 1,2-Dichloroethane 40.3 ug/L EPA 8260B 3/28/09 95.1 70-130 <br /> Benzene 39.3 ug/L EPA 8260B 3/28/09 101 70-130 <br /> Chlorobenzene 39.8 ug/L EPA 8260B 3/28/09 99.5 70-130 <br /> Toluene 40.1 ug/L EPA 8260B 3/28/09 100 70-130 <br /> Methyl-t-butyl ether 40.7 ug/L EPA 8260B 3/28/09 91.7 70-130 <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />