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November 21, 2018 Lab ID : STK1854539 <br /> Pacific Northwest Oil Customer : 3-16002 <br /> Inorganic -Metals QC <br /> 245.1 10/10/2018:214909 All analysis quality controls are within established criteria. <br /> 10/16/2018:212330 All preparation quality controls are within established criteria,except: <br /> The following note applies to Beryllium,Cadmium,Lead, Selenium,Vanadium: <br /> 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> 3050 The following note applies to Cobalt,Molybdenum,Antimony: <br /> 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> The following note applies to Barium,Beryllium,Cadmium, Copper,Lead, Selenium,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 /> 7471 10/10/2018:212103 All preparation quality controls are within established criteria. <br /> RCRA 11/17/2018:213694 All preparation quality controls are within established criteria. <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.D—a1—,B.S. <br /> Approved By Kelly A.Dunnahoo,B.S. Title:Laboratory Director <br /> Date:2018-11-21 <br /> Page 2 of 7 <br />