The Emission Inventory System (EIS) is a secured database for EPA and State/Local and Tribal Air Agencies only. The EIS is used to develop the National Emission Inventory (NEI). While you cannot have access to EIS, you can have access to the current and past NEI’s through EPA’s NEI website at https://19january2021snapshot.epa.gov/air-emissions-inventories/2014-national-emissions-inventory-nei-data.