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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> aw Reported: 01/20/2012 16:23 <br /> 0 Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number. 139874 Leachate <br /> Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent Lab <br /> Constituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals <br /> QC Batch ID: BVA0424 <br /> Benzene BVA0424-BS1 LCS 26.390 25.000 ug/L 106 70-130 <br /> Bromodichloromethane BVA0424-BSI LCS 21.030 25.000 ug/L 84.1 70-130 <br /> Chlorobenzene BVA0424-BS1 LCS 21.600 25.000 ug/L 86.4 70-130 <br /> Chloroethane BVA0424-BS1 LCS 27.110 25.000 ug/L 108 70-130 <br /> 1,4-Dichlorobenzene BVA0424-BSI LCS 20.660 25.000 ug/L 82.6 70-130 <br /> 1,1-Dichloroethane BVA0424-BS1 LCS 26.120 25.000 ug/L 104 70-130 <br /> 1,1-Dichloroethene BVA0424-BS1 LCS 29.350 25.000 ug/L 117 70-130 <br /> Toluene BVA0424-BSI LCS 22.530 25.000 ug/L 90.1 70-130 <br /> Trichloroethene BVA0424-BS1 LCS 23.660 25.000 ug/L 94.6 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BVA0424-BS1 LCS 9.6500 10.000 ug/L 96.5 76-114 <br /> Toluene-d8(Surrogate) BVA0424-BSI LCS 10.080 10.000 ug/L 101 88-110 <br /> ,ftromofluorobenzene(Surrogate) BVA0424-BS1 LCS 9.4500 10.000 ug/L 94.5 86-115 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirely. <br /> All results listed in this report are for the exclusive use of the submitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation- <br /> 4100 <br /> nterpretation4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 21 of 26 <br />