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The final action will address the agency’s required technology review of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Paint Stripping and Miscellaneous Surface Coating Operations (“PS-MSCO”). The PS-MSCO NESHAP, subpart HHHHHH, was promulgated pursuant to section 112(d) of the Clean Air Act (CAA) on January 9, 2008. The NESHAP established work practices for controlling emissions of hazardous air pollutants (HAP) from area sources, using generally available control technologies or management practices. This NESHAP addresses three source categories with different operations and HAP emissions. Paint stripping operations result in methylene chloride emissions. Autobody refinishing spray applications of coatings used in motor vehicle and mobile equipment surface coating operations result in “target HAP” emissions, which include compounds of chromium, lead, manganese, nickel and cadmium. Miscellaneous surface coating operations lead to target HAP emissions due to spray application of coatings that contain target HAP to a plastic and/or metal substrate on a part or product, with some applicability exceptions. The EPA has proposed to determine that there are no cost-effective developments that would further reduce air toxics and therefore has not proposed to amend existing emissions standards based on the technology review. However, the action proposed would provide a simplified alternative to the exemption process for sources that do not spray apply coatings containing target HAP emissions, require electronic reporting, and finalize other proposed minor technical updates and clarifications. In accordance with terms of a consent decree (Our Children’s Earth Foundation v. Wheeler, No. 19-cv-7125 (N.D. Cal.)), the EPA proposed this action by notice published November 19, 2021, and intends to finalize this action by November 1, 2022.