2024 EI Webinar Slides (2023 data) (pdf)

Template Letter for 2021 Title V Emissions Reporting (pdf)

SLEIS Training Slides (pdf)
Information on gathering your data & performing calculation

• Final Regulation (This is the final Federal regulation)
• Plating and Polishing EPA Brochure (This is an informative brochure compiled by the EPA)
• Plating and Polishing Initial Notification (This is EPA's example of an initial notificat

• Final Regulation (pdf) (This is the final Federal regulation)
• Iron and Steel Foundries EPA Brochure (pdf) (This is an informative brochure compiled by the EPA)
• Mercury Switch Recovery Program (This is a link to the mercury switch removal program discussed in the regula

In 1995, the United States Environmental Protection Agency (US EPA) issued a memo known as the Once-in-Always-In (OIAI) policy that effectively made all major source designations permanent regardless of whether emission reductions lowered facility emissions of hazardous air pollutants (HAP) to less than major source thresholds. On January 25, 2018, the US EPA released another memo that ultimately reversed the OIAI policy to allow major source facilities to reclassify as area sources. This new memo became known as the Major MACT to Area (MM2A) policy memo.