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Air Emissions Inventories

2011 National Emissions Inventory (NEI) Technical Support Document

The primary purpose of this technical support document is to explain the sources of information included in the inventory. This includes showing which sources of data are used for each sector, and then providing more information about the EPA-created components of the data. For each emissions sector, we provide a synopsis of the types of sources that are included in that sector.

The Appendices shows the percentage of emissions from different data sources in the 2011 NEI by pollutant and EIS sector. The data sources are grouped from the full suite of datasets used to compile the 2011 NEI.

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