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Laboratories Inc. . <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Reported: 02/03/2012 15:37 <br /> 180 Promenade Circle,Suite 320 Project: Harney Lane,S.J.County <br /> Sacramento,CA 95834 Project Number: 139866 <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: BVA1276 <br /> Chloride BVA1276-BSI LCS 50.839 50.000 mg/L 102 90-110 <br /> Nitrate as N BVA1276-BS1 LCS 5.0360 5.0000 mg/L 101 90-110 <br /> Sulfate BVA1276-BS1 LCS 100.56 100.00 mg/L 101 90-110 <br /> QC Batch ID: BVA1405 <br /> Dissolved Calcium BVA1405-BS1 LCS 10.143 10.000 mg/L 101 85-115 <br /> Dissolved Magnesium BVA1405-BS1 LCS 10.342 10.000 mg/L 103 85-115 <br /> Dissolved Sodium BVA1405-BSI LCS 9.6256 10.000 mg/L 96.3 85-115 <br /> Dissolved Potassium BVA1405-BS1 LCS 9.7606 10.000 mg/L 97.6 85-115 <br /> QC Batch ID: BVA1519 <br /> Total Alkalinity as CaCO3 BVA1519-BS3 LCS 98.730 100.00 mg/L 98.7 90-110 <br /> QC Batch ID: BVA1603 <br /> Chemical Oxygen Demand BVA1603-BSI LCS 745.63 750.00 mg O/L 99.4 85-115 <br /> QC Batch ID: BVA1623 <br /> Total Dissolved Solids @ 180 C BVA1623-BS1 LCS 615.00 586.00 mg/L 105 90-110 <br /> QC Batch ID: BVA1923 <br /> Dissolved Calcium BVA1923-BS1 LCS 10.041 10.000 mg/L 100 85-115 <br /> Dissolved Magnesium BVA1923-BS1 LCS 9.8825 10.000 mg/L 98.8 85-115 <br /> Dissolved Sodium BVA1923-BS1 LCS 10.657 10.000 mg/L 107 85-115 <br /> Dissolved Potassium BVA1923-BS1 LCS 9.9397 10.000 mg/L 99.4 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.bclabs.com Page 46 of 49 <br />