An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »


EPA Materials Submitted to the National Research Council

To support the National Research Council (NRC) review of the IRIS assessment development process (NRC 2014), EPA submitted a 2-part report to the NRC in January 2013.  Part 1 provides an overview of the IRIS Program implementation of the NRC’s 2011 recommendations for the development of IRIS assessments. Part 2 provides chemical-specific examples demonstrating IRIS Program implementation of recommendations as of January 2013.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.