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1 111, Laboratories Inc. I , . <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 08/12/2013 15:10 <br /> 180 Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number. 149270 <br /> Project Manager: Sheila Richgels <br /> Water Analysis (General Chemistry) <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: BWH0100 <br /> Total Alkalinity as CaCO3 BWH0100-BS3 LCS 97.520 100.00 mg/L 97.5 90-110 <br /> QC Batch ID: BWH0115 <br /> Dissolved Calcium BWH0115-BSI LCS 10.046 10.000 mg/L 100 85-115 <br /> Dissolved Magnesium BWH0115-BS1 LCS 10.114 10.000 mg/L 101 85-115 <br /> QC Batch ID: 3WHO171 <br /> Chloride BWH0171-BS1 LCS 51.447 50.000 mg/L 103 90-110 <br /> QC Batch ID: BWH0227 <br /> Total Dissolved Solids @ 1110C BWH0227-BS1 LCS 560.00 586.00 mg/L 95.6 90-110 <br /> QC Batch ID: BWH0230 <br /> Chemical Oxygen Demand BWH0230-BSI LCS 726.06 750.00 mg 02/1- 96.8 85-115 <br /> QC Batch ID: BWHO421 <br /> Chloride BWH0421-BS1 LCS 50.641 50.000 mg/L 101 90-110 <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 34 of 36 <br />