The Environmental Protection Agency (EPA) is taking final action to approve a revision to the State Implementation Plan (SIP) for the State of Missouri. This final action will amend the SIP to approve a revision submitted by the State of Missouri on September 20, 2022, to the existing state rule, ``Confidential Information.'' These revisions include structural, formatting and other text changes that are administrative in nature and do not impact the stringency of the SIP or air quality. The EPA's approval of this rule revision is in accordance with the requirements of the Clean Air Act (CAA).