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 This website is no longer updated and links to external websites and some internal pages may not work.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

Proposed Unit Level Ozone Season NOx Allowance Allocations to Existing Units in Six States: Supplemental Proposed Rule TSD

This Technical Support Document (TSD) presents the proposed unit-level allocations based on the existing-unit portion of each state’s initial ozone season NOx emission budget to covered existing units in Iowa, Kansas, Michigan, Missouri, Oklahoma, and Wisconsin.

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