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Laboratories Inc. . <br /> Environm <br /> ental Testing Laboratory Since 1949 <br /> 9haw Reported: 09/27/2010 16:29 <br /> 1326 North Market Boulevard 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: BTI0278 Used client sample: Y-Description: MW-1,09/02/201010:01 <br /> Chloride DUP 1012363-01 7.6190 7.4740 mg/L 1.9 10 <br /> MS 1012363-01 7.6190 113.59 101.01 mg/L 105 80-120 <br /> MSD 1012363-01 7.6190 113.14 101.01 mg/L 0.4 104 10 80-120 <br /> Nitrate as N DUP 1012363-01 1.9650 1.8390 mg/L 6.6 10 <br /> MS 1012363-01 1.9650 7.0535 5.0505 mg/L 101 80-120 <br /> MSD 1012363-01 1.9650 6.9980 5.0505 mg/L 1.1 99.7 10 80-120 <br /> Sulfate DUP 1012363-01 9.1380 8.9700 mg/L 1.9 10 <br /> MS 1012363-01 9.1380 114.21 101.01 mg/L 104 80-120 <br /> MSD 1012363-01 9.1380 114.40 101.01 mg/L 0.2 104 10 80-120 <br /> QC Batch ID: BT10320 Used client sample: N <br /> Bicarbonate DUP 1012332-07 355.21 355.41 mg/L 0.1 10 <br /> AlInarbonate DUP 1012332-07 ND ND mg/L 10 <br /> I Alkalinity as CaCO3 DUP 1012332-07 291.33 291.49 mg/L 0.1 10 <br /> QC Batch ID: BTI0321 Used client sample: Y-Description: MW-2R,09/02/2010 12:01 <br /> Bicarbonate DUP 1012363-02 95.713 96.274 mg/L 0.6 10 <br /> Carbonate DUP 1012363-02 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1012363-02 78.500 78.960 mg/L 0.6 10 <br /> QC Batch ID: 13T10361 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 1012352-01 373.33 366.66 mg/L 1.8 10 <br /> QC Batch ID: BT10368 Used client sample: Y-Description: MW-1,09/02/2010 10:01 <br /> Dissolved Calcium DUP 1012363-01 21.512 21.359 mg/L 0.7 20 <br /> MS 1012363-01 21.512 31.684 10.204 mg/L 99.7 75-125 <br /> MSD 1012363-01 21.512 31.934 10.204 mg/L 2.4 102 20 75-125 <br /> Dissolved Magnesium DUP 1012363-01 11.043 10.995 mg/L 0.4 20 <br /> MS 1012363-M 11.043 21.146 10.204 mg/L 99.0 75-125 <br /> MSD 1012363-01 11.043 21.225 10.204 mg/L 0.8 99.8 20 75-125 <br /> Dissolved Sodium DUP 1012363-01 14.969 14.504 mg/L 3.2 20 <br /> MS 1012363-01 14.969 24.917 10.204 mg/L 97.5 75-125 <br /> MSD 1012363-01 14.969 24.803 10.204 mg/L 1.2 96.4 20 75-125 <br /> Dissolved Potassium DUP 1012363-01 3.5195 3.5621 mg/L 1.2 20 <br /> MS 1012363-01 3.5195 13.234 10.204 mg/L 95.2 75-125 <br /> MSD 1012363-01 3.5195 13.535 10.204 mg/L 3.1 98.2 20 75-125 <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 Iaboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party imerpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 35 of 36 <br />