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The final rule, Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act (Major MACT to Area- MM2A final rule), was promulgated on November 19, 2020. (See 85 FR 73854). The MM2A final rule became effective on January 19, 2021. On January 20, 2021, President Biden issued Executive Order 13990 Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis. The EPA has identified the MM2A final rule as an action being considered pursuant section (2)(a) of Executive Order 13990. Under this review, EPA, as appropriate and consistent with the Clean Air Act section 112, will publish for comment a notice of proposed rulemaking reconsidering the MM2A final rule.