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May 31, 2011 Lab ID : STK1134128 <br /> Quality Servic,Inc. Customer : 3-16866 <br /> Inorganic - Wet Chemistry QC <br /> 4500-H B 05/16/2011:310756 All preparation quality controls are within established criteria. <br /> 4500HB 05/16/2011:311048 All analysis quality controls are within established criteria. <br /> 5210B 05/22/2011:300347 All analysis quality controls are within established criteria. <br /> 05/22/2011:300349 All analysis quality controls are within established criteria. <br /> 05/17/2011:300339 All preparation quality controls are within established criteria,except: <br /> The following note applies to BOD: <br /> 440 Sample nonhomogeneity may be affecting this analyte.Data was accepted based on the LCS or CCV <br /> recovery. <br /> 05/17/2011:300337 All preparation quality controls are within established criteria,except: <br /> The following note applies to CBOD: <br /> 310 LCS above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. <br /> EPA351.2 05/27/2011:207652 All analysis 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:DMB <br /> Approved By Kelly A.Duanahoo,B.S. <br /> Page 2 of 5 <br />