Pursuant to the Federal Clean Air Act (CAA or the ``Act''), the Environmental Protection Agency (EPA or the ``Agency'') is proposing approval of a CAA section 111(d) plan submitted by the North Dakota Department of Environmental Quality (NDDEQ or the ``Department'') on July 28, 2020 to regulate landfill gas and its components from existing municipal solid waste (MSW) landfills.

The Environmental Protection Agency (EPA) is adopting three technical standards developed by SAE International (SAE) for equipment that recovers, recycles, and/or recharges the refrigerant 2,3,3,3- Tetrafluoroprop-1-ene (HFO-1234yf or R-1234yf) in motor vehicle air conditioners (MVACs). The three standards are SAE J2843, SAE J2851, and SAE J3030. This rule adopts the most current versions of these standards by incorporating them by reference into the regulations under Title VI of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) approves the Mashantucket Pequot Tribal Nation's (MPTN or the Tribe) Tribal Implementation Plan (TIP) under the Clean Air Act (CAA) to regulate air pollution within the exterior boundaries of the Tribe's reservation. The TIP is one of two CAA regulatory programs that comprise the Tribe's Clean Air Program (CAP). EPA approved the Tribe for treatment in the same manner as a State (Treatment as State or TAS) for purposes of administering New Source Review (NSR) and Title V operating permits under the CAA on July 10, 2008.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is notifying the public that we have received CAA section 111(d)/129 negative declarations from Arkansas, Louisiana, New Mexico, and Albuquerque-Bernalillo County, New Mexico, for existing Hospital/Medical/Infectious Waste Incinerator (HMIWI) units. These negative declarations certify that HMIWI subject to the requirements of sections 111(d) and 129 of the CAA do not exist within the jurisdictions of Arkansas, Louisiana, New Mexico, and Albuquerque-Bernalillo County.