Technical Support Document describes how the emission inventories were prepared for air quality modeling for the years 2011 and 2023 using a version of the 2011, version 6.3 emissions modeling platform that was updated to address public comments. This platform is based on the 2011 National Emissions Inventory, Version 2 and was used to update an analysis of interstate transport with respect to the 2008 Ozone National Ambient Air Quality Standard. This update includes the modeling cases 2011en and 2023en.

• Additional Updates to Emissions Inventories for the Version 6.3, 2011 Emissions Modeling Platform for the Year 2023 (PDF)(194 pp, 6 MB, 10/2017, A. Eyth and J. Vukovich)