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Laboratories Inc. I . <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 09/06/2013 15:00 <br /> 180 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number: 149269 <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: BWH1796 <br /> Chloride BWH1796-BS1 LCS 50.189 50.000 mg/L 100 90-110 <br /> Nitrate as N BWH1796-BSI LCS 5.0390 5.0000 mg/L 101 90-110 <br /> Sulfate BWH1796-BSI LCS 99.102 100.00 mg/L 99.1 90-110 <br /> QC Batch ID: BWH1911 <br /> Total Alkalinity as CaCO3 BWH1911-BS3 LCS 98.730 100.00 mg/L 98.7 90-110 <br /> QC Batch ID: BWH2O70 <br /> Dissolved Calcium BWH2O70-BS1 LCS 9.6057 10.000 mg/L 96.1 85-115 <br /> Dissolved Magnesium BWH2O70-BS1 LCS 9.9191 10.000 mg/L 99.2 85-115 <br /> Dissolved Sodium BWH2O70-BS1 LCS 9.3200 10.000 mg/L 93.2 85-115 <br /> Dissolved Potassium BWH2O70-BS1 LCS 9.1809 10.000 mg/L 91.8 85-115 <br /> QC Batch ID: BWH2324 <br /> Total Dissolved Solids @ 180C BWH2324-BS1 LCS 555.00 586.00 mg/L 94.7 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 resuh,Iisted in this report are for the exclusive use of the submitting party.BC L.aboramrie,Inc.assumes no responsibility for report alteration,separation,detachment or thud party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 18 of 20 <br />