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i <br />Laboratories Inc.. <br />iEnvironmental Testing Laboratory Since 1949 <br />CB&I Reported: 02/20/2014 9:55 <br />180 Promenade Circle, Suite 320 Project: North County LF, SJ County <br />Sacramento, CA 95834 Project Number: Anuual Leachate 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: BX131021 Used client sample: <br />N <br />Total Magnesium DUP 1403330-02 <br />53.071 <br />54.232 <br />mg/L 2.2 <br />20 <br />MS 1403330-02 <br />53.071 <br />68.417 <br />10.000 mg/L 153 <br />76-125 A03 <br />MSD 1403330-02 <br />53.071 <br />65.387 <br />10.000 mg/L 4.5 123 <br />20 <br />76-125 <br />Total Sodium DUP 1403330-02 <br />230.26 <br />232.56 <br />mg/L 1.0 <br />20 <br />MS 1403330-02 <br />230.26 <br />250.01 <br />10.000 mg/L 197 <br />75-125 A03 <br />1403330-02 <br />230.26 <br />229.34 <br />10.000 mg/L 8.6 -9.2 <br />20 <br />75-125 A03 <br />iMSD <br />Total Potassium DUP 1403330-02 <br />5.1452 <br />5.2363 <br />mg/L 1.8 <br />20 <br />MS 1403330-02 <br />5.1452 <br />15.466 <br />10.000 mg/L 103 <br />75-125 <br />MSD 1403330-02 <br />5.1452 <br />14.701 <br />10.000 mg/L 5.1 95.6 <br />20 <br />75-125 <br />i <br />1 <br />1 <br />1 <br />i <br />i <br />t <br />1 <br />i <br />i <br />The results in this report apply to the samples analyzed <br />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 <br />party. BC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment or third <br />party interpretation. <br />4100 Atlas Court Bakersfield, <br />CA 93308 <br />(661) 3274911 FAX (661) 327-1918 www.bclabs.com <br />Page 27 of 28 <br />