Adopting Subpart Ba Requirements in Emission Guidelines for Municipal Solid Waste Landfills

In this action, the Environmental Protection Agency (EPA) proposes to amend the 2016 Emission Guidelines and Compliance Times for Municipal Solid Waste Landfills (``MSW Landfills EG''). The requirements for state and federal plans implementing the MSW Landfills EG were adopted from 1975 regulations, referred to herein as the ``old implementing regulations,'' which are cross-referenced in the MSW Landfill EG. In a separate regulatory proposal published in the Federal Register in August 2018, the EPA proposed changes to modernize the old implementing regulations governing emission guidelines under a new subpart. This action proposes to update the cross-references to the old implementing regulations in the MSW Landfills EG to harmonize with the proposed new timing and completeness requirements for state and federal plans.