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Laboratories Inc. I <br /> Environmental Testing Laboratory Since 1949 <br /> w Reported: 01/30/2012 11:40 <br /> 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: BVA0875 Used client sample: N <br /> Dissolved Calcium DUP 1200749-01 74.335 74.309 mg/L 0.0 20 <br /> MS 1200749-01 74.335 84.626 10.204 mg/L 101 75-125 <br /> MSD 1200749-01 74.335 85.698 10.204 mg/L 1.3 111 20 75-125 <br /> Dissolved Magnesium DUP 1200749-01 17.669 17.659 mg/L 0.1 20 <br /> MS 1200749-01 17.669 28.200 10.204 mg/L 103 75-125 <br /> MSD 1200749-01 17.669 27.997 10.204 mg/L 0.7 101 20 75-125 <br /> Dissolved Sodium DUP 1200749-01 37.775 38.100 mg/L 0.9 20 <br /> MS 1200749-01 37.775 47.827 10.204 mg/L 98.5 75-125 <br /> MSD 1200749-01 37.775 48.029 10.204 mg/L 0.4 100 20 75-125 <br /> Dissolved Potassium DUP 1200749-01 6.6680 6.6886 mg/L 0.3 20 <br /> MS 1200749-01 6.6680 16.944 10.204 mg/L 101 75-125 <br /> MSD 1200749-01 6.6680 16.932 10.204 mg/L 0.1 101 20 75-125 <br /> QC Batch ID: BVA0927 Used client sample: N <br /> ride DUP 1200782-01 134.73 134.66 mg/L 0.1 10 <br /> MS 1200782-01 134.73 238.52 101.01 mg/L 103 80-120 <br /> MSD 1200782-01 134.73 238.77 101.01 mg/L 0.1 103 10 80-120 <br /> Nitrate as N DUP 1200782-01 2.3400 2.3580 mg/L 0.8 10 <br /> MS 1200782-01 2.3400 12.491 10.101 mg/L 100 80-120 <br /> MSD 1200782-01 2.3400 12.608 10.101 mg/L 0.9 102 10 80-120 <br /> Sulfate DUP 1200782-01 285.72 285.30 mg/L 0.1 10 <br /> MS 1200782-01 285.72 494.57 202.02 mg/L 103 80-120 <br /> MSD 1200782-01 285.72 494.81 202.02 mg/L 0.0 104 10 80-120 <br /> QC Batch ID: BVA0929 Used client sample: N <br /> Bicarbonate DUP 1200775-01 438.50 434.05 mg/L 1.0 10 <br /> Carbonate DUP 1200775-01 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1200775-01 359.64 355.99 mg/L 1.0 10 <br /> QC Batch ID: BVA1011 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1200775-04 745.00 740.00 mg/L 0.7 10 <br /> QC Batch ID: BVA1012 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1200796-02 780.00 770.00 mg/L 1.3 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 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 or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bdabs.com Page 28 of 29 <br />