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Laboratories Inc. I <br /> Environmental Testing Laboratory Since 1949 <br /> w Reported: 01/25/2012 15:04 <br /> Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number: 139874 <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: BVA0560 <br /> Chloride BVA0560-BS1 LCS 53.833 50.000 mg/L 108 90-110 <br /> Nitrate as N BVA0560-BSI LCS 5.4360 5.0000 mg/L 109 90-110 <br /> Sulfate BVA0560-BS1 LCS 108.90 100.00 mg/L 109 90-110 <br /> QC Batch ID: BVA0622 <br /> Total Alkalinity as CaCO3 BVA0622-BS3 LCS 99.950 100.00 mg/L 100 90-110 <br /> QC Batch ID: BVA0705 <br /> Total Dissolved Solids @ 180 C BVA0705-BS1 LCS 630.00 586.00 mg/L 108 90-110 <br /> QC Batch ID: BVA0760 <br /> Dissolved Calcium BVA0760-BSI LCS 10.282 10.000 mg/L 103 85-115 <br /> Dissolved Magnesium BVA0760-BSI LCS 10.321 10.000 mg/L 103 85-115 <br /> Dkolved Sodium BVA0760-BS1 LCS 10.146 10.000 mg/L 101 85-115 <br /> Wed Potassium BVA0760-BS1 LCS 9.9427 10.000 mg/L 99.4 85-115 <br /> QC Batch ID: BVA0907 <br /> Chemical Oxygen Demand BVA0907-BS1 LCS 738.21 750.00 mg O/L 98.4 85-115 <br /> QC Batch ID: BVA1496 <br /> Dissolved Calcium BVA1496-BSI LCS 10.244 10.000 mg/L 102 85-115 <br /> Dissolved Magnesium BVA1496-BS1 LCS 10.441 10.000 mg/L 104 85-115 <br /> Dissolved Sodium BVA1496-BSI LCS 9.3137 10.000 mg/L 93.1 85-115 <br /> Dissolved Potassium BVA1496-BS1 LCS 9.6385 10.000 mg/L 96.4 85-115 <br /> 0 <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.bclabs.com Page 37 of 40 <br />