Document reYz1nmwj3YRJnDXdRxDk9RYr

Sierra Club FOIA 2025-EPA-04883 ) Background and Timeline 2012 -- EPA issued final MATS rule for coal- and oil-fired EGUs Within 8 years of promulgating standards under Clean Air Act (CAA) section 112(d)(2), the EPA must conduct a residual risk and technology review (RTR) 112(f)(2): update standards if needed to provide an ample margin of safety to protect public health 112(d)(6): review and revise standards as necessary taking into account developments in practices, processes, and control technologies 2020 - RTR Conclusions: Current MATS requirements provide ample margin of safety to protect human health; and Existing air pollution control technologies in use were well-established and provided capture efficiencies necessary for compliance 2021 - Executive Order 13990 instructed EPA to consider publishing a notice of proposed rulemaking suspending, revising, or rescinding the 2020 RTR EPA found that no revisions were warranted under risk review--the 2020 risk analysis was conducted approaches and methodologies consistent with those used in RTRs for other source categories EPA found that there have been developments in the costs and effectiveness of control technologies and that many sources outperform current standards April 24, 2023 - Published proposed revisions to the MATS rule under Clean Air Act (CAA) 112(d)(6) technology review April 25, 2024-- Final Revision to MATS Rule 90000-SZ00000- 8881.0- oe SC_EVERSPLIT0006302