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June 13, 2012 Lab ID : STK1234922 <br /> Luhdorff& Sealmanini, Consulting Eng. Customer : 3-12023 <br /> Inorganic - Wet Chemistry QC <br /> 2320B 06/05/2012:208119 All analysis quality controls are within established criteria <br /> 06/05/2012:206150 All preparation quality controls are within established criteria <br /> 2510B 06/05/2012:208101 All analy sis quality controls are within established criteria <br /> 06/05/2012:206151 All preptvation quality controls are within established criteria <br /> 2540 E 06/01/2012:206034 All prep.uation quality controls are within established criteria <br /> 06/05/2012:206149 All preparation quality controls are within established criteria <br /> 300.0 06/01/2012:207970 All analy sis quality controls are within established criteria <br /> 06/01/2012:206082 All preparation quality controls are within established criteria — <br /> 5540C 06/01/2012:208002 All anal)sisquality controls are within established criteria <br /> 06/01/2012:206114 All preparation quality controls are within established criteria <br /> Certification:: I certify that this data package is in compliance with NELAC standards, both <br /> technically and for completeness, except for any conditions listed above. Release of the data contained <br /> in this data package is authorized by the Laboratory Director or his designee, as verified by the <br /> following electronic signature. <br /> KD:SB <br /> Approved By Kelly A. Dunnahoo, B.S. Z It <br /> Page 24 15 <br />