The Environmental Protection Agency (EPA) is approving a revision to the Oregon State Implementation Plan (SIP) submitted on November 5, 2020. The revision establishes new fees to be paid by stationary sources of air contaminants that submit notices of intent to construct. The revision also adds a new basic air contaminant discharge permit category to allow certain minor sources, that would otherwise be required to obtain a general, simple, or standard permit, the option to qualify for a basic permit.

The Environmental Protection Agency (EPA) is proposing to approve four permitting rules submitted as a revision to the San Diego County Air Pollution Control District (SDAPCD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under section 110(a)(2)(C) and part D of title I of the Clean Air Act (CAA or ``Act'').

The Environmental Protection Agency (EPA) is taking final action to approve state implementation plan (SIP) revisions submitted by the State of North Carolina, through the North Carolina Department of Environment and Natural Resources, Division of Air Quality (NCDAQ), in a letter dated September 22, 2020. The SIP revisions include the 1997 8-hour ozone national ambient air quality standards (NAAQS) Limited Maintenance Plans (LMPs) for the Great Smoky Mountains National Park (GSMNP), Raleigh-Durham-Chapel Hill (Triangle) and Rocky Mount, North Carolina Areas (collectively, ``Areas'').

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD) and the Placer County Air Pollution Control District (PCAPCD) portions of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) from metal coating operations and general regulatory definitions.