The 2005 v4.1 platform is based on the 2005 NEI version 2, includes the projected future years of 2016 and supported the Regulatory Impact Assessment for the proposed Mercury and Air toxics Standards and the Appropriate and Necessary Finding.

• 2005 v4.1 Data files
• Technical Support Document
• Mercury and Air Toxic Standards (MATS) Supporting Documents
• Clean Air Mercury Rule Hg Speciation Factors(1 pg, 231 K)