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Air Emissions Inventories

2014 National Emissions Inventory (NEI) Documentation

The NEI database includes air emissions sources of both criteria of both criteria and hazardous air polluntants.  Data are available for many facilities and as county totals.  The 2014 NEI is the next inventory on the three-year cycle and the EPA will create it using data provided by State, Local and Tribal air agencies.  The Emissions Inventory System (EIS) helps the EPA to build the NEI.

2014 NEI Plan

2014 NEI Resources for State, Local, Tribal Agencies

Submittal Instructions and Supporting Data for 2014 NEI


Rail (locomotives) and Commercial Marine