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Laboratories Inc. _ <br /> Environmental Testing Laboratory Since 1949 <br /> Lawrence&Associates Reported: 04/24/2013 15:58 <br /> 3590 Iron Court Project: Diamond Pet Foods <br /> Shasta Lake City,CA 96019 Project Number: Diamond Pet Food-Ripon <br /> Project Manager: David Kirk <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: BWD0814 <br /> Total Dissolved Solids @ 180 C BWD0814-BS1 LCS 565.00 586.00 mg/L 96.4 90-110 <br /> QC Batch ID: BWD0815 <br /> Total Dissolved Solids @ 180 C BWD0815-BS1 LCS 575.00 586.00 mg/L 98.1 90-110 <br /> QC Batch ID: BWD0905 <br /> Nitrate as N BWD0905-BS1 LCS 5.1810 5.0000 mg/L 104 90-110 <br /> QC Batch ID: BWD0906 <br /> Nitrate as N BWD0906-BS1 LCS 4.9020 5.0000 mg/L 98.0 90-110 <br /> QC Batch ID: BWD0995 <br /> pH BWD0995-BS2 LCS 7.0400 7.0000 pH Units 101 95-105 <br /> Electrical Conductivity @ 25 C BWD0995-BS1 LCS 322.90 303.00 umhos/cm 107 90-110 <br /> QC Batch ID: BWD0996 <br /> pH BWD0996-BS2 LCS 7.0400 7.0000 pH Units 101 95-105 <br /> Electrical Conductivity @ 25 C BWD0996-BS1 LCS 317.60 303.00 umhos/cm 105 90-110 <br /> QC Batch ID: BWD1082 <br /> pH BWD1082-BS2 LCS 7.0500 7.0000 pH Units 101 95-105 <br /> Electrical Conductivity @ 25 C BWD1082-BS1 LCS 312.10 303.00 umhos/cm 103 90-110 <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 30 of 32 <br />