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Laboratories enc. <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 08/08/2013 15:56 <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 CaCC3 DUP 1315958-04 278.71 281.45 mg/L 1.0 10 <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: BWHO186 Used client sample: Y-Description: L-1,07/30/2013 07:21 <br /> Total Calcium DUP 1315968-01 318.71 318.93 mg/L 0.1 20 <br /> MS 1315968-01 318.71 323.02 10.000 mg/L 43.2 75-125 A03 <br /> MSD 1315968-01 318.71 338.04 10.000 mg/L 4.5 193 20 75-125 A03 <br /> Total Magnesium DUP 1315968-01 162.86 163.02 mg/L 0.1 20 <br /> MS 1315968-01 162.86 170.76 10.000 mg/L 79.0 75-125 <br /> MSD 1315968-01 162.86 178.08 10.000 mg/L 4.2 152 20 75-125 A03 <br /> QC Batch ID: BWH0228 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1316023-01 646.66 629.99 mg/L 2.6 10 <br /> QC Batch ID: BWH0230 Used client sample: Y-Description: G-1, 07/29/2013 10:46 <br /> Chemical Oxygen Demand DUP 1315967-01 87.842 90.043 mg 02/1- 2.5 20 <br /> MS 1315967-01 87.842 781.08 750.00 mg 02/1- 92.4 80-120 <br /> MSD 1315967-01 87.842 805.29 750.00 mg 02/1- 3.1 95.7 20 80-120 <br /> The results in this report apply to the samples analyed in accordance with the chain of custody document This analytical report must he 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 parry interpretation. <br /> 4100 Attas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bdabs.com Page 25 of 26 <br />