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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

New Source Review (NSR) Permitting

Major Source Nonattainment Review - Determinations of Applicability Abstract

This compendium provides an overview of older major source nonattainment area related determinations in brief question and answer format. As of May, 2010, most of the documents in the abstracts have not been scanned into the New Source Review Policy & Guidance database.

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