On January 13, 2017, the EPA published a final RMP rule (2017 Amendments) to prevent and mitigate the effect of accidental releases of hazardous chemicals from facilities that use, manufacture, and store them. The 2017 Amendments were a result of Executive Order 13650, Improving Chemical Facility Safety and Security, which directed EPA (and several other Federal agencies) to, among other things, modernize policies, regulations, and standards to enhance safety and security in chemical facilities. The 2017 Amendments rule contained various new provisions applicable to RMP-regulated facilities addressing prevention program elements, emergency coordination with local responders, and information availability to the public. EPA received three petitions for reconsideration of the 2017 Amendments rule under CAA section 307(d)(7)(B). On December 19, 2019, EPA promulgated a final RMP rule (2019 Revisions) that acts on the reconsideration. The 2019 Revisions rule repealed several major provisions of the 2017 Amendments and retained other provisions with modifications. On January 20, 2021, Executive Order 13990, Protecting Public Health and the Environment and Restoring Science To Tackle the Climate Crisis (EO 13990), directed federal agencies to review existing regulations and take action to address priorities established by the new administration including bolstering resilience to the impact of climate change and prioritizing environmental justice. The EPA is considering developing a regulatory action to revise the current RMP regulations. The proposed rule would address the administration's priorities and focus on regulatory revisions completed since 2017. The proposed rule would also expect to contain a number of proposed modifications to the RMP regulations based in part on stakeholder feedback received from RMP public listening sessions held on June 16 and July 8, 2021.