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lid � 1 P <br /> Report Number: 470 <br /> QC Report: Laboratory Control Sample (LCS) i Date : 12/21/2005 j <br /> Project Name : Former Beacon 12474 <br /> 11 <br /> Project Number: 1474.48 <br /> I <br /> li LCS Percent <br /> Spike Analysis Date Percent Recov. <br /> Parameter Level Units Method Analyzed Recov. Limit <br /> Benzene 40:0 uglL EPA 82606 12/16/05 98.4 70-130 <br /> Toluene 4010 ug/L EPA 826013 12/16/05 98.8 70-130 <br /> Tert-Butanol 200 ug/L EPA 8260B 12/16/05 98.8 70-130 <br /> Methyl-t-Butyl Ether 4&0 ug/L EPA 82608 12/16/05 94.5 70-130 <br /> r <br /> !i <br /> Benzene 40:0 ug/L EPA 8260B 12117/05 96.1 70-130 <br /> Toluene 401'0 ug/L EPA 8260B 12/17/05 96.3 70-130 <br /> Tert-Butanol 200 ug/L EPA 8260B 12/17105 94.3 70-130 <br /> Methyl-t-Butyl Ether 40.E;0 ug/L EPA 8260E 12/17105 95.4 70-130 <br /> Benzene 40'0 ug1L EPA 8260B 12/20/05 94.1 70-130 <br /> Toluene 40110 ug/L EPA 8260E 12/20/05 94.0 70-130 <br /> Tert-Butanol 200 ug/L EPA 8260B 12/20/05 89.8 70-130 <br /> Methyl4-Butyl Ether 40,0 ug/L EPA 8260E 12/20/05 93.5 70-130 <br /> i <br /> i <br /> Benzene 4010 ug/L EPA 8260B 12/16/05 108 70-130 <br /> Toluene 40 l0 ug/l_ EPA 8260B 12116/05 101 70-130 <br /> Tert-Butanol 200 uglL EPA 8260B 12/16/05 105 70-130 <br /> Methyl4-Butyl Ether 40.0 ug/L EPA 8260B 12/16/05 105 70-130 <br /> 1 <br /> r <br /> KIFF ANALYTICAL, LLC Approved By: Jo Kiff <br /> i 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />