The Environmental Protection Agency (EPA) is correcting a final rule that appeared in the Federal Register on March 26, 2020. The EPA finalized the residual risk and technology review (RTR) conducted for the Municipal Solid Waste (MSW) Landfills source category regulated under national emission standards for hazardous air pollutants (NESHAP). This action corrects inadvertent errors in the cross- referencing and formatting in the Federal Register; as well as clarifies two operational and reporting requirements in the March 26, 2020, final rule. This action also revises the heading of 40 CFR part 60, subpart WWW as described in the March 26, 2020, Federal Register document. The corrections and clarifications described in this action do not affect the substantive requirements of the regulations or the results of the RTR conducted for the MSW Landfills source category.