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Laboratories, Inc. 1Ito. <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Reported: 08/07/2012 16:42 <br /> 180 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number. 139867 <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: BVG18O8 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1213761-03 725.00 740.00 mg/L 2.0 10 <br /> QC Batch ID: BVG1842 Used client sample: Y-Description: MW-2R,07/24/2012 12:36 <br /> Chloride DUP 1213751-01 5.0400 5.0280 mg/L 0.2 10 <br /> MS 1213751-01 5.0400 58.235 50.505 mg/L 105 80-120 <br /> MSD 1213751-01 5.0400 58.000 50.505 mg/L 0.4 105 10 80-120 <br /> Nitrate as N DUP 1213751-01 2.8090 2.8100 mg/L 0.0 10 <br /> MS 1213751-01 2.8090 8.0495 5.0505 mg/L 104 80-120 <br /> MSD 1213751-01 2.8090 7.9606 5.0505 mg/L 1.1 102 10 80-120 <br /> Sulfate DUP 1213751-01 1.6300 1.5960 mg/L 2.1 10 <br /> MS 1213751-01 1.6300 105.69 101.01 mg/L 103 80-120 <br /> MSD 1213751-01 1.6300 105.95 101.01 mg/L 0.3 103 10 80-120 <br /> QC Batch ID: BVG19O2 Used client sample: N <br /> Dissolved Calcium DUP 1213787-01 78.500 78.817 mg/L 0.4 20 <br /> MS 1213787-01 78.500 89.067 10.204 mg/L 104 75-125 <br /> MSD 1213787-01 78.500 88.783 10.204 mg/L 0.3 101 20 75-125 <br /> Dissolved Magnesium DUP 1213787-01 29.414 29.619 mg/L 0.7 20 <br /> MS 1213787-01 29.414 39.986 10.204 mg/L 104 75-125 <br /> MSD 1213787-01 29.414 39.835 10.204 mg/L 0.4 102 20 75-125 <br /> Dissolved Sodium DUP 1213787-01 41.267 41.304 mg/L 0.1 20 <br /> MS 1213787-01 41.267 51.786 10.204 mg/L 103 75-125 <br /> MSD 1213787-01 41.267 51.631 10.204 mg/L 0.3 102 20 75-125 <br /> Dissolved Potassium DUP 1213787-01 3.3921 3.3994 mg/L 0.2 20 <br /> MS 1213787-01 3.3921 13.828 10.204 mg/L 102 75-125 <br /> MSD 1213787-01 3.3921 13.750 10.204 mg/L 0.6 102 20 75-125 <br /> QC Batch ID: BVG1958 Used client sample: N <br /> Bicarbonate DUP 1213748-03 247.64 248.00 mg/L 0.1 10 <br /> Carbonate DUP 1213748-03 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1213748-03 203.10 203.40 mg/L 0.1 10 <br /> QC Batch ID: BVG1959 Used client sample: Y-Description: LW-1, 07/25/2012 08:12 <br /> Bicarbonate DUP 1213751-05 125.77 126.32 mg/L 0.4 10 <br /> Carbonate DUP 1213751-05 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1213751-05 103.15 103.60 mg/L 0.4 10 <br /> The results in this report apply to the samples analyzed in accordance with the chain oJcustody document.This analytical report must be reproduced in its entirety. <br /> All results listed m this report are for the exclusive use of the submitting party.BC Laboratories,Inc.assumes no responsibility for report altema ion,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.br4abs.com Page 32 of 33 <br />