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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 02/12/2014 10:57 <br /> 180 Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number: Annual 149270 <br /> Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 826013) <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: BXA1888 <br /> Benzene BXA1888-BS1 LCS 29.271 25.000 ug/L 117 70-130 <br /> Bromodichloromethane BXA1888-BSI LCS 28.090 25.000 ug/L 112 70-130 <br /> Chlorobenzene BXA1888-BSI LCS 23.791 25.000 ug/L 95.2 70-130 <br /> Chloroethane BXA1888-BS1 LCS 29.653 25.000 ug/L 119 70-130 <br /> 1,4-Dichlorobenzene BXA1888-BS1 LCS 25.716 25.000 ug/L 103 70-130 <br /> 1,1-Dichloroethane BXA1888-BS1 LCS 29.525 25.000 ug/L 118 70-130 <br /> 1,1-Dichloroethene BXA1888-BS1 LCS 31.142 25.000 ug/L 125 70-130 <br /> Toluene BXA1888-BS1 LCS 28.822 25.000 ug/L 115 70-130 <br /> Trichloroethene BXA1888-BSI LCS 31.575 25.000 ug/L 126 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BXA1888-BS1 LCS 10.290 10.000 ug/L 103 75-125 <br /> Toluene-d8(Surrogate) BXA1888-BS1 LCS 10.620 10.000 ug/L 106 80-120 <br /> 4-Bromofluorobenzene(Surrogate) BXA1888-BS1 LCS 9.4700 10.000 ug/L 94.7 80-120 <br /> i <br /> 1 <br /> t <br /> 1 <br /> 1 <br /> 1 <br /> 1 <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 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 37 of 43 <br />