The risk and technology review (RTR) for the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Secondary Lead Smelters (40 CFR part 63, subpart X) was promulgated on January 5, 2012 (77 FR 556). On March 5, 2012, several groups petitioned the EPA for reconsideration of aspects of the final rule. On December 10, 2012, the EPA granted reconsideration of the risk analysis related to the "ample margin of safety analysis." This action will propose the EPA's response to the issues for which the EPA granted reconsideration. This action will also address the review of the Secondary Lead Smelters NESHAP pursuant to Clean Air Act (CAA) section 112(d)(6). CAA section 112(d)(6) requires the EPA to review and revise the emission standards as necessary, taking into account developments in practices, processes, and control technologies, no less often than every eight years. Pursuant to a consent decree entered in California Communities Against Toxics, et al. v. Regan, Case No: 1:22-cv- (D.D.C. 2024), the proposed rule was to be signed by September 30, 2025.