2017 National Emissions Inventory (NEI) Plan

The National Emissions Inventory (NEI) is a comprehensive and detailed estimate of annual total air emissions of both criteria and hazardous air pollutants (HAPs) from all air emissions sources.

• 2017 NEI Plan: Final Addendum (pdf) (206 KB)
• 2017 NEI Plan Revised (pdf) (838.55 KB)
• Appendix 5 - Cross dataset tagging proposed rules (pdf) (271.66 KB)
• Appendix 6 - Option Group Option Set Enhancement EIS Requirements (pdf) (203.8 KB)