Approval and Promulgation of Delegation of Authority for Designated Facilities and Pollutants; Washington; Southwest Clean Air Agency

The Environmental Protection Agency (EPA) is approving delegation of authority to the Southwest Clean Air Agency (SWCAA) for implementing and enforcing the Federal plan requirements for several types of incinerators, specifically hospital/medical/infectious waste incinerators, commercial and industrial solid waste incineration units, small municipal solid waste combustion units, and sewage sludge incineration units. On March 27, 2023, and March 28, 2023, respectively, the EPA Region 10 Regional Administrator and the Executive Director of SWCAA signed a Memorandum of Agreement concerning the delegation of authority of the Federal plan to SWCAA by the EPA, which became effective upon signature. The Federal plan addresses the implementation and enforcement of emission guidelines that impose emission limits and other control requirements on designated air pollutants from the incineration units described above. This document informs the public of the Memorandum of Agreement, provides a copy of the signed document, and amends regulatory text in accordance with the Clean Air Act (CAA).