The Environmental Protection Agency (EPA) is approving a regional haze state implementation plan (SIP) revision submitted by the District of Columbia (``the District'' or ``DC'') through the Department of Energy and Environment (DOEE) on November 8, 2019, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule (RHR) for the program's second implementation period.

Under the Clean Air Act, the Environmental Protection Agency (EPA) is establishing a schedule for the the California Air Resources Board (CARB) to submit revisions to the state implementation plan (SIP) addressing ``Severe'' area requirements for the 2008 8-hour ozone national ambient air quality standards (NAAQS) for the Eastern Kern nonattainment area (``Eastern Kern''). CARB will be required to submit SIP revisions addressing Severe area requirements for Eastern Kern, including revisions to new source review (NSR) rules, no later than January 7, 2023.

The Environmental Protection Agency (EPA) is approving changes to the North Carolina State Implementation Plan (SIP) submitted through the North Carolina Division of Air Quality (NCDAQ) on October 9, 2020. The SIP revision seeks to modify the State's monitoring, recordkeeping, and reporting regulations by adding one definition, adding references to approved testing methods, updating the reference format, and making minor changes to general formatting and language use for clarity purposes. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).

The Environmental Protection Agency (EPA) is approving a revision to the North Carolina State Implementation Plan (SIP), submitted on July 16, 2020, by the State of North Carolina, through the North Carolina Department of Environment and Natural Resources, Division of Air Quality (NCDAQ) for the purpose of allocating a portion of the available 2026 safety margin in the 2008 8-hour Ozone Maintenance Plan to the 2026 nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) motor vehicle emissions budgets (``MVEBs'' or ``budgets'') for the North Carolina portion of the