This action will address the agency’s technology review of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for lead acid battery manufacturing. The lead acid battery manufacturing NESHAP, 40 CFR subpart PPPPPP, was promulgated pursuant to section 112(d) of the Clean Air Act (CAA) by final rule on July 16, 2007 and then by direct final rule on March 26, 2008. The NESHAP established emission limitations for controlling emissions of hazardous air pollutants (HAP) from area sources using generally available control technologies. The HAP covered by the rule and emitted from grid casting, paste mixing, three-process operations, lead oxide manufacturing, lead reclamation, and other lead-emitting operations is lead. This action will implement the technology review requirements of 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 8 years. Pursuant to the Our Children’s Earth consent decree, the EPA is obligated to propose this action by February 10, 2022 and finalize this action by February 9, 2023