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<br /> <br /> <br />12-1 <br /> <br />Section 12 <br />References <br />United States Environmental Protection Agency (USEPA), 2002. Guidance on Environmental Data Verification and <br />Data Validation. EPA QA/G-8. <br />USEPA, 2017. USEPA Contract Laboratory Program National Functional Guidelines for Inorganic Superfund Data <br />Review. USEPA-540-R-2017-001, January. <br /> <br />