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

The Environmental Protection Agency (EPA) is approving two state implementation plan (SIP) revisions submitted by the Commonwealth of Pennsylvania. These revisions address certain reasonably available control technology (RACT) requirements, specifically those related to control technique guidelines (CTGs) for volatile organic compounds (VOCs) and the addition of regulations controlling VOC emissions from industrial cleaning solvents. These submissions are part of Pennsylvania's efforts to implement RACT for the 2008 ozone national ambient air quality standard (NAAQS).

The Environmental Protection Agency (EPA) is taking final action to partially approve and partially disapprove revisions to the San Diego Air Pollution Control District (SDAPCD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's demonstration regarding reasonably available control technology (RACT) requirements and negative declarations for the 2008 ozone national ambient air quality standards (NAAQS or ``standards'') in the San Diego ozone nonattainment area under the jurisdiction of the SDAPCD.

The Environmental Protection Agency (EPA) is finalizing revisions to the Calaveras County Air Pollution Control District (CCAPCD) and the Mariposa County Air Pollution Control District (MCAPCD) portions of the California State Implementation Plan (SIP). In this action, we are approving two rules, one submitted by the CCAPCD and the other by the MCAPCD, governing the issuance of permits for stationary sources, focusing on the preconstruction review and permitting of major sources and major modifications under part D of title I of the Clean Air Act (CAA or ``the Act'').