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Report Number : 25987 <br /> 4C Report : Laboratory Control Sample (LCS) Date : 4/26/2002 <br /> Project Name : 3725 South Tracy <br /> Project Number : 020418-DW-2 <br /> LCS <br /> LCS Percent <br /> Spike Analysis Date Percent Recov. <br /> Parameter Level Units Method Analyzed Recov. Limit <br /> Benzene 19.7 ug/L EPA 82606 4121102 98.6 70-130 <br /> Toluene 19.7 ug/L EPA 8260B 4121102 101 70-130 <br /> Tert-Butanol 98.4 ug/L EPA 8260B 4121102 102 70-130 <br /> Methyl-t-Butyl Ether 19.7 ug/L EPA 8260B 4121102 91.3 70-130 <br /> Benzene 40.0 ug/L EPA 8260B 4120102 102 70-130 <br /> Toluene 40.0 ug/L EPA 8260B 4120102 101 70-130 <br /> Tert-Butanol 200 ug/L EPA 8260B 4120/02 101 70-130 <br /> Methyl-t-Butyl Ether 40.0 ug/L EPA 82606 4120/02 110 70-130 <br /> N <br /> KIFF AN TICAL, LLC' Approved By: el Kiff ` <br /> 720 Ofive Drive, Suite Davis, CA 95616 530-297-4800 <br />