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Laboratories Inc. I <br /> Environmental Testing Laboratory Since 1949 <br /> aw Reported: 01/25/2012 13:22 <br /> 0 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number. 139867 Leachate <br /> Project Manager: Sheila Richgels <br /> Water Analysis (General Chemistry) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent Lab <br /> Constituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals <br /> QC Batch ID: BVA0816 <br /> Total Alkalinity as CaCO3 BVA0816-BS3 LCS 96.910 100.00 mg/L 96.9 90-110 <br /> QC Batch ID: BVA0823 <br /> Total Dissolved Solids @ 180 C BVA0823-BS1 LCS 600.00 586.00 mg/L 102 90-110 <br /> QC Batch ID: 13VA0863 <br /> Chloride BVA0863-BSI LCS 50.718 50.000 mg/L 101 90-110 <br /> Nitrate as N BVA0863-BS1 LCS 5.0020 5.0000 mg/L 100 90-110 <br /> Sulfate BVA0863-BSI LCS 101.03 100.00 mg/L 101 90-110 <br /> QC Batch ID: BVA0978 <br /> Total Calcium BVA0978-BSI LCS 10.209 10.000 mg/L 102 85-115 <br /> Total Magnesium BVA0978-BS1 LCS 10.444 10.000 mg/L 104 85-115 <br /> Total Sodium BVA0978-BS1 LCS 9.2677 10.000 mg/L 92.7 85-115 <br /> 1 Potassium BVA0978-BS1 LCS 9.5220 10.000 mg/L 95.2 85-115 <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.bciabs.com Page 15 of 17 <br />