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 This website is no longer updated and links to external websites and some internal pages may not work.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

Air Emissions Inventories

Volume 7 - Data Management Procedures

"Volume 7 - Data Management Procedures" provided a relational data model for handling emissions data, known as the "Phase I Data Model".  This volume of the EIIP guidance is outdated; therefore, availability through this site has been discontinued.  For current information on emissions data models, please refer to the following resources: