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Laboratories Inc. . <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 - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID: BWH0100 Used client sample: N <br /> Total Alkalinity as CaCO3 DUP 1315958-04 278.71 281.45 mg/L 1.0 10 <br /> QC Batch ID: BWH0115 Used client sample: N <br /> Dissolved Calcium DUP 1316010-01 21.946 21.819 mg/L 0.6 20 <br /> MS 1316010-01 21.946 31.656 10.204 mg/L 95.2 75-125 <br /> MSD 1316010-01 21.946 32.136 10.204 mg/L 1.5 99.9 20 75-125 <br /> Dissolved Magnesium DUP 1316010-01 3.2508 3.2473 mg/L 0.1 20 <br /> MS 1316010-01 3.2508 13.605 10.204 mg/L 101 75-125 <br /> MSD 1316010-01 3.2508 13.382 10.204 mg/L 1.6 99.3 20 75-125 <br /> QC Batch ID: BWH0171 Used client sample: Y-Description: G-1, 07/29/2013 10:46 <br /> Chloride DUP 1315967-01 8.8940 8.8710 mg/L 0.3 10 <br /> MS 1315967-01 8.8940 62.508 50.505 mg/L 106 80-120 <br /> MSD 1315967-01 8.8940 62.391 50.505 mg/L 0.2 106 10 80-120 <br /> QC Batch ID: BWH0227 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1315958-03 955.00 980.00 mg/L 2.6 10 <br /> QC Batch ID: BWH0230 Used client sample: Y-Description: G-1,07/29/201310:46 <br /> Chemical Oxygen Demand DUP 1315967-01 87.842 90.043 mg 021L 2.5 20 <br /> MS 1315967-01 87.842 781.08 750.00 mg 021L 92.4 80-120 <br /> MSD 1315967-01 87.842 805.29 750.00 mg 02/L 3.1 95.7 20 80-120 <br /> QC Batch ID: BWH0421 Used client sample: N <br /> Chloride DUP 316546-02RE, 484.68 484.92 mg/L 0.0 10 <br /> MS 316546-02RE, 484.68 734.60 252.53 mg/L 99.0 80-120 <br /> MSD 316546-02RE, 484.68 738.67 252.53 mg/L 0.6 101 10 80-120 <br /> 772e 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 entirery. <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.bciabs.com Page 35 of 36 <br />