New 2016 Base Year Inventory Development. Since early 2018, Metro 4/SESARM and other similar multijurisdictional organizations have been developing a new 2016 base year emissions inventory in a national collaboration with U.S. EPA. This new inventory will not be available for the ongoing VISTAS Phase II regional haze project work but may serve future needs in the Southeast and other regions. Information will be posted here when the 2016 inventory reached a point where distribution is appropriate.
VISTAS Phase II Regional Haze Project Inventories. As of April 20, 2018, work was beginning on emission inventories to support the regional haze SIPs due to U.S. EPA by July 31, 2021. The VISTAS states will be using EPA's 2011 base year inventories but will be updating electricity generating unit emission projections for 2028 and some other major source emission projections. All other 2028 projection inventories from EPA will be used as they have been provided by EPA. Inventory update efforts wil be shared with VISTAS project stakeholders via conference call in coming months.