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Laboratories Inc. 11 . <br /> Environmental Testing Laboratory Since 1949 <br /> W Reported: 01/25/2012 15:04 <br /> 7Saocramento, <br /> Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> CA 95834 Project Number. 139874 <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: BVA0625 <br /> Benzene BVA0625-BSI LCS 25.050 25.000 ug/L 100 70-130 <br /> Bromodichloromethane BVA0625-BS1 LCS 24.790 25.000 ug/L 99.2 70-130 <br /> Chlorobenzene BVA0625-BSI LCS 24.100 25.000 ug/L 96.4 70-130 <br /> Chloroethane BVA0625-BS1 LCS 25.270 25.000 ug/L 101 70-130 <br /> 1,4-Dichlorobenzene BVA0625-BS1 LCS 23.270 25.000 ug/L 93.1 70-130 <br /> 1,1-Dichloroethane BVA0625-BS1 LCS 24.390 25.000 ug/L 97.6 70-130 <br /> 1,1-Dichloroethene BVA0625-BSI LCS 24.450 25.000 ug/L 97.8 70-130 <br /> Toluene BVA0625-BS1 LCS 25.140 25.000 ug/L 101 70-130 <br /> Trichloroethene BVA0625-BS1 LCS 24,300 25.000 ug/L 97.2 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BVA0625-BS1 LCS 9.8300 10.000 ug/L 98.3 76-114 <br /> Toluene-d8(Surrogate) BVA0625-BS1 LCS 10.140 10.000 ug/L 101 88-110 <br /> mofluorobenzene(Surrogate) BVA0625-BS1 LCS 9.2800 10.000 ug/L 92.8 86-115 <br /> QC Batch ID: BVA0792 <br /> Benzene BVA0792-BS1 LCS 25.100 25.000 ug/L 100 70-130 <br /> Bromodichloromethane BVA0792-BSI LCS 23.350 25.000 ug/L 93.4 70-130 <br /> Chlorobenzene BVA0792-BS1 LCS 22.890 25.000 ug/L 91.6 70-130 <br /> Chloroethane BVA0792-BS1 LCS 25.970 25.000 ug/L 104 70-130 <br /> 1,4-Dichlorobenzene BVA0792-BS1 LCS 21.230 25.000 ug/L 84.9 70-130 <br /> 1,1-Dichloroethane BVA0792-BS1 LCS 24.680 25.000 ug/L 98.7 70-130 <br /> 1,1-Dichloroethene BVA0792-BSI LCS 24.370 25.000 ug/L 97.5 70-130 <br /> Toluene BVA0792-BS1 LCS 24.730 25.000 ug/L 98.9 70-130 <br /> Trichloroethene BVA0792-BSI LCS 21.680 25.000 ug/L 86.7 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BVA0792-BS1 LCS 9.2200 10.000 ug/L 92.2 76-114 <br /> Toluene-d8(Surrogate) BVA0792-BS1 LCS 10.130 10.000 ug/L 101 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BVA0792-BS1 LCS 9.9000 10.000 ug/L 99.0 86-115 <br /> 4 <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 entirety. <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 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 33 of 40 <br />