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1 <br /> Laboratories Inc. . <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 08/19/2013 13:29 <br /> 180 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number: 149269 <br /> Project Manager: Sheila Richgels <br /> rWater 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 Resuk Added Units RPD Recovery RPD Recovery Quals <br /> rQC Batch ID: BWHO161 Used client sample: Y-Description: MW-2R,07/31/2013 13:16 <br /> Chloride DUP 1316179-01 5.4730 5.2430 mg/L 4.3 10 <br /> MS 1316179-01 5.4730 56.557 50.505 mg/L 101 80-120 <br /> MSD 1316179-01 5.4730 56.490 50.505 mg/L 0.1 101 10 80-120 <br /> Nitrate as N DUP 131617941 2.8080 2.7810 mg/L 1.0 10 <br /> MS 1316179-01 2.8080 7.9273 5.0505 mg/L 101 80-120 <br /> MSD 1316179-01 2.8080 7.9333 5.0505 mg/L 0.1 101 10 80-120 <br /> Sulfate DUP 1316179-01 1.6590 1.7000 mg/L 2.4 10 <br /> MS 1316179-01 1.6590 102.08 101.01 mg/L 99.4 80-120 <br /> MSD 1316179-01 1.6590 102.24 101.01 mg/L 0.2 99.6 10 80-120 <br /> QC Batch ID: BWH0325 Used client sample: N <br /> Dissolved Calcium DUP 1316177-01 81.718 82.019 mg/L 0.4 20 <br /> MS 1316177-01 81.718 90.895 10.204 mg/L 89.9 75-125 <br /> MSD 1316177-01 81.718 90.774 10.204 mg/L 0.1 88.7 20 75-125 <br /> Dissolved Magnesium DUP 1316177-01 42.686 42.926 mg/L 0.6 20 <br /> MS 1316177-01 42.686 52.534 10.204 mg/L 96.5 75-125 <br /> MSD 1316177-01 42.686 52.507 10.204 mg/L 0.1 96.2 20 75-125 <br /> Dissolved Sodium DUP 1316177-01 42.534 42.844 mg/L 0.7 20 <br /> MS 1316177-01 42.534 51.936 10.204 mg/L 92.1 75-125 <br /> MSD 1316177-01 42.534 52.134 10.204 mg/L 0.4 94.1 20 75-125 <br /> Dissolved Potassium DUP 1316177-01 7.2058 7.2100 mg/L 0.1 20 <br /> MS 1316177-01 7.2058 17.376 10.204 mg/L 99.7 75-125 <br /> MSD 1316177-01 7.2058 17.279 10.204 mg/L 0.6 98.7 20 75-125 <br /> QC Batch ID: BWH0436 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1316168-01 262.00 260.00 mg/L 0.8 10 <br /> QC Batch ID: BWH0639 I Used client sample: N <br /> Bicarbonate DUP 1316178-09 357.26 356.52 mg/L 0.2 10 <br /> Carbonate DUP 1316178-09 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1316178-09 293.01 292.40 mg/L 0.2 10 <br /> QC Batch ID: BWH0865 J Used client sample: Y-Description: MW-2R,07/31/2013 13:16 <br /> Bicarbonate DUP 1316179-01 98.676 97.384 mg/L 1.3 10 <br /> Carbonate DUP 1316179-01 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1316179-01 80.930 79.870 mg/L 1.3 10 <br /> r <br /> r <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 results listed in this report we 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 32 of 33 <br />