The Environmental Protection Agency (EPA) is proposing approval of revision to the Kansas State Implementation Plan (SIP), submitted by the Kansas Department of Health and the Environment (KDHE) on December 9, 2020. The proposed revision removes the Kansas City, Kansas seven pounds per square inch Reid Vapor Pressure (RVP) Fuel requirement which required gasoline sold in the Kansas City, Kansas area to have a seven pounds per square inch Reid Vapor Pressure from June 1 to September 15.

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Feather River Air Quality Management District (FRAQMD or ``District'') portion of the California State Implementation Plan (SIP). This revision concerns emissions of volatile organic compounds (VOCs) from surface preparation and clean-up operations. We are proposing to approve a local rule to regulate these emission sources under the Clean Air Act (CAA or the ``Act''). We are taking comments on this proposal and plan to follow with a final action.

The Environmental Protection Agency (EPA) is finalizing a partial approval, partial disapproval, and partial conditional approval of revisions to the Maricopa County Air Quality Department (MCAQD or County) portion of the Arizona State Implementation Plan (SIP). This action concerns the County's demonstration regarding reasonably available control technology (RACT) requirements and negative declarations for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS or ``standards'') in the portion of the Phoenix-Mesa ozone nonattainment area under the jurisdiction of the MCAQD.

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Arizona Department of Environmental Quality's (ADEQ) portion of the Arizona State Implementation Plan (SIP). These revisions are primarily intended to make corrections to the ADEQ's SIP- approved rules for the issuance of New Source Review (NSR) permits for stationary sources under the Clean Air Act (CAA or Act). This proposed action will update the ADEQ's NSR rules in the SIP and correct the remaining deficiencies in the ADEQ's NSR program that we identified in final EPA rulemaking actions in 2015 and 2016.