Emissions Development Tools
These air emission inventory tools are used to develop the National Emissions Inventory (NEI). The PM Augmentation Tool is software developed by EPA to help ensure complete PM inventories by correcting inconsistencies in submitted data and filling gaps where possible. WebFIRE is EPA's online emissions factor repository, retrieval, and development tool. The SCC Tool is a searchable data base of the source classification codes that are used to characterize emissions in the NEI.