The Environmental Protection Agency (EPA) is approving changes to the Jefferson County portion of the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky, through the Energy and Environment Cabinet (Cabinet), on March 4, 2020.

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ), on December 9, 2019. The SIP revision updates the description and attainment status designations of geographic areas within the Commonwealth for several National Ambient Air Quality Standards (NAAQS or standards). The updates are being made to conform Kentucky's attainment status tables with the federal attainment status designations for these areas.

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the State Implementation Plan (SIP) submitted by the State of Missouri on January 15, 2019, and supplemented by letter on July 11, 2019. In the proposal, EPA proposed removal of a rule related to the control of emissions from polyethylene bag sealing operations in the St. Louis, Missouri area from its SIP. This removal does not have an adverse effect on air quality. The EPA's approval of this rule revision is in accordance with the requirements of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania. The revision is an attainment plan for the 2010 sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS) in the Indiana County, Pennsylvania SO<INF>2</INF> nonattainment area (hereafter referred to as the ``Indiana Area'' or ``Area''). The Indiana Area is comprised of Indiana County and a portion of Armstrong County (Plumcreek Township, South Bend Township, and Elderton Borough) in Pennsylvania.