Clearinghouse for Inventories and Emissions Factors

Air Emissions Inventories

The Air Emissions Inventories contains information about the amount and type of pollutants released from human activities and natural sources. 

Air Emissions Modeling

The Air Emissions Modeling supports emission modeling activities. Emissions model input formatted inventories, based on the latest versions of EPA's National Emission Inventory databases, are available here.

Emissions Factors

Electronic Reporting

Emissions Monitoring Knowledge Base

Emissions Monitoring Knowledge Base provides information about monitoring techniques for air pollution control by industry type and by control technique.