EPA'S RESIDENTIAL WOOD COMBUSTION TOOL: IMPROVEMENTS AND APPLICATIONS

The U.S. Environmental Protection Agency’s (EPA) National Emissions Inventory (NEI) catalogs emissions of criteria pollutants and hazardous air pollutants (HAPs) from point and nonpoint sources. Because emissions from nonpoint sources are typically not measured directly, they must be estimated. The EPA requests that states submit nonpoint source data, but where the states do not have data or resources to estimate their nonpoint source pollution, the EPA must estimate it for them.