The Environmental Protection Agency (EPA) is finalizing modifications of certain compliance dates under the Renewable Fuel Standard (RFS) program. First, EPA is extending the RFS compliance deadline for the 2019 compliance year and the associated deadline for submission of attest engagement reports for the 2019 compliance year for small refineries. The new deadlines are November 30, 2021, and June 1, 2022, respectively.

The Environmental Protection Agency (EPA) is proposing to approve a revision to the North Dakota State Implementation Plan (SIP) submitted by the State of North Dakota on November 11, 2016 and supplemented on March 15, 2021, that addresses amendments to the regional haze provisions of the North Dakota Administrative Code (NDAC). These revisions were submitted to remove certain regional haze requirements related to Best Available Retrofit Technology (BART) in the first planning period.

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision formally submitted by the Delaware Department of Natural Resources and Environmental Control (DNREC). Under the Clean Air Act (CAA), a state's SIP must include an emission statement regulation that requires stationary sources in ozone nonattainment areas classified as marginal or above to report annual emissions of nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC).

The Environmental Protection Agency (EPA) is taking final action to partially approve and partially disapprove the state implementation plan (SIP) revisions submitted by the State of California pursuant to the requirements of the Clean Air Act (CAA or ``Act'') for the implementation, maintenance, and enforcement of the 2015 national ambient air quality standards (NAAQS or ``standards'') for ozone. Specifically, the EPA is approving the SIP revision for all elements except those that relate to prevention of significant deterioration (PSD).