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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> w Reported: 01/25/2012 15:04 <br /> 0 Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number: 139874 <br /> Project Manager: Sheila Richgels <br /> Water Analysis (General Chemistry) <br /> Quality Control Repo - 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: BVA1496 Used client sample: Y-Description: MW-4, 01/23/2012 11:19 <br /> Dissolved Magnesium DUP 1201253-01 57.135 56.856 mg/L 0.5 20 <br /> MS 1201253-01 57.135 67.118 10.204 mg/L 97.8 75-125 <br /> MSD 1201253-01 57.135 67.244 10.204 mg/L 0.2 99.1 20 75-125 <br /> Dissolved Sodium DUP 1201253-01 164.20 164.23 mg/L 0.0 20 <br /> MS 1201253-01 164.20 171.72 10.204 mg/L 73.7 75-125 A03 <br /> MSD 1201253-01 164.20 166.19 10.204 mg/L 2.1 39.1 20 75-125 A03 <br /> Dissolved Potassium DUP 1201253-01 5.5452 5.5000 mg/L 0.8 20 <br /> MS 1201253-01 5.5452 15.741 10.204 mg/L 99.9 75-125 <br /> MSD 1201253-01 5.5452 15.655 10.204 mg/L 0.6 99.1 20 75-125 <br /> The results in this report apply to the samples analyzed 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 w third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bdabs.com Page 39 of 40 <br />