Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for photochemical oxidants including ozone (O<INF>3</INF>), the EPA is retaining the current standards, without revision.

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).

Due to the receipt of adverse comment, the Environmental Protection Agency (EPA) is withdrawing the October 9, 2020, direct final rule to update the Code of Federal Regulations (CFR) to codify its findings that nine areas in four states attained the revoked 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment dates. The EPA will address all comments received in a subsequent final rule for which the EPA will not institute a second comment period.