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July 24, 2018 Lab ID : STK1839418 <br /> Metal Finishing Solutions,Inc. Customer : 3-18181 <br /> Inorganic-Metals QC <br /> 07/09/2018:207923 All preparation quality controls are within established criteria,except: <br /> The following note applies to Barium,Beryllium: <br /> 3010 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> The following note applies to Zinc: <br /> 430 Post Digestion Spike(PDS)not within Acceptance Range(AR)because of matrix interferences <br /> affecting this analyte.Data was accepted based on the LCS recovery. <br /> Certification:: I certify that this data package is in compliance with ELAP standards,both technically <br /> and for completeness, except for any conditions listed above. Release of the data contained in this data <br /> package is authorized by the Laboratory Director or his designee, as verified by the following electronic <br /> signature. <br /> KD:DMB <br /> Digitally signed by Kelly A.Dennehoo,B.S. <br /> Approved By Kelly A.Dunnahoo,B.S. (�Title:LaboretoryDvmto, <br /> Date:2018-07-24 <br /> Page 2 of 7 <br />