The Environmental Protection Agency (EPA) is taking final action to approve a revision submitted to the State Implementation Plan (SIP) by the State of Missouri on January 19, 2021. This final action will amend the SIP to incorporate revisions to Missouri's rule related to control of emissions from Batch-Type Charcoal Kilns. These revisions correct an erroneous reference, update, correct, and clarify references to test methods, remove unnecessary words, and make other grammatical and typographical corrections.

The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) revision to the Mecklenburg County portion of the North Carolina SIP, hereinafter referred to as the Mecklenburg Local Implementation Plan (LIP). The revision was submitted by the State of North Carolina, through the North Carolina Division of Air Quality (NCDAQ), on behalf of Mecklenburg County Air Quality (MCAQ) via a letter dated April 24, 2020, and was received by EPA on June 19, 2020.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving a revision to a State Implementation Plan (SIP) submitted by the Secretary of the Louisiana Department of Environmental Quality (LDEQ) on March 25, 2021. The SIP submittal addresses requirements of Federal regulations that direct the State to submit a periodic report that assesses progress toward regional haze reasonable progress goals (RPGs) and includes a determination of adequacy of the existing implementation plan.

The Environmental Protection Agency (EPA) is finalizing a limited approval and limited disapproval of a revision to the Mojave Desert Air Quality Management District's (MDAQMD or District) portion of the California State Implementation Plan (SIP). This revision concerns oxides of nitrogen (NO<INF>X</INF>) emissions from stationary internal combustion engines.