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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 09/06/2013 15:00 <br /> 180 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number. 149269 <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: BWH1796 Used client sample: N <br /> Chloride DUP 318010-03RE, 485.58 486.64 mg/L 0.2 10 <br /> MS 318010-03RE- 485.58 1520.6 1010.1 mg/L 102 80-120 <br /> MSD 318010-03RE' 485.58 1525.5 1010.1 mg/L 0.3 103 10 80-120 <br /> Nitrate as N DUP 318010-03RE, 54.960 54.820 mg/L 0.3 10 <br /> MS 318010-03RE- 54.960 151.45 101.01 mg/L 95.5 80-120 <br /> MSD 318010-03RE, 54.960 151.45 101.01 mg/L 0 95.5 10 80-120 <br /> Sulfate DUP 318010-03RE- 4802.3 4821.5 mg/L 0.4 10 <br /> MS 318010-03RE, 4802.3 6707.7 2020.2 mg/L 94.3 80-120 <br /> MSD 31801 D-03RE- 4802.3 6726.5 2020.2 mg/L 0.3 95.2 10 80-120 <br /> QC Batch ID: BWH1911 Used client sample: N <br /> Bicarbonate DUP 1318013-03 306.81 307.36 mg/L 0.2 10 <br /> Carbonate DUP 1318013-03 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1318013-03 251.63 252.08 mg/L 0.2 10 <br /> QC Batch ID: BWH2070 Used client sample: N <br /> Dissolved Calcium DUP 1318028-01 92.710 94.463 mg/L 1.9 20 <br /> MS 131802841 92.710 105.25 10.204 mg/L 123 75-125 <br /> MSD 1318028-01 92.710 103.87 10.204 mg/L 1.3 109 20 75-125 <br /> Dissolved Magnesium DUP 1318028-01 3.3639 3.4488 mg/L 2.5 20 <br /> MS 1318028-01 3.3639 13.621 10.204 mg/L 101 75-125 <br /> MSD 1318028-01 3.3639 13.444 10.204 mg/L 1.3 98.8 20 75-125 <br /> Dissolved Sodium DUP 131802841 232.46 232.85 mg/L 0.2 20 <br /> MS 1318028-01 232.46 241.97 10.204 mg/L 93.2 75-125 <br /> MSD 1318028-01 232.46 241.07 10.204 mg/L 0.4 84.4 20 75-125 <br /> Dissolved Potassium DUP 1318028-01 1.4594 1.4835 mg/L 1.6 20 <br /> MS 131802841 1.4594 11.794 10.204 mg/L 101 75-125 <br /> MSD 1318028-01 1.4594 11.582 10.204 mg/L 1.8 99.2 20 75-125 <br /> QC Batch ID: BWH2324 Used client sample: Y-Description: MW-4A,08/21/2013 11:13 <br /> Total Dissolved Solids @ 180 C DUP 1318017-02 400.00 406.00 mg/L 1.5 10 <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 m 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 party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)3274911 FAX(661)327-1918 www,bciabs.com Page 19 of 20 <br />