Ozone

Air Plan Approval; Wisconsin; Emissions Reporting and Infrastructure SIP Requirements

The Environmental Protection Agency (EPA) is approving a revision to the Wisconsin state implementation plan (SIP) revising air emissions reporting requirements codified in Chapter 438 of the Wisconsin Administrative Code (Wis. Admin. Code). Additionally, EPA is approving a related infrastructure requirement under section 110 of the Clean Air Act (CAA) for the 2012 fine particulate matter (PM<INF>2.5</INF>) and 2015 ozone National Ambient Air Quality Standards (NAAQS).

Publication Date: 
Monday, July 24, 2023 - 4:00am

Air Approval and Promulgation of Implementation Plans; Montana; Libby 1997 Annual PM2.5 Limited Maintenance Plan and Redesignation Request

In this document, the Environmental Protection Agency (EPA or Agency) is taking three separate but related actions. First, EPA is finalizing its determination that the Libby fine particulate matter (PM<INF>2.5</INF>) nonattainment area (Libby Area) is attaining the 1997 Annual PM<INF>2.5</INF> national ambient air quality standards (NAAQS or standard) based on 2014-2021 data. Secondly, EPA is finalizing approval of Montana's plan for maintaining the 1997 Annual PM<INF>2.5</INF> NAAQS (limited maintenance plan).

Publication Date: 
Monday, July 24, 2023 - 4:00am

Air Plan Approval; South Carolina; Update to Materials Incorporated by Reference

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the South Carolina State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by South Carolina and approved by EPA. In this rule, EPA is also notifying the public of corrections and clarifying changes to the Code of Federal Regulations (CFR) tables that identify material incorporated by reference into the South Carolina SIP.

Publication Date: 
Thursday, July 13, 2023 - 4:00am

Air Plan Approval; Ohio; Consumer Products Rule

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), a State Implementation Plan (SIP) revision submitted by the Ohio Environmental Protection Agency (Ohio EPA) on September 7, 2022. Ohio EPA requests that EPA approve revised volatile organic compounds (VOCs) control rules under Chapter 3745-112 of the Ohio Administrative Code (OAC) into Ohio's SIP. The revised rules will reduce emissions that contribute to ozone formation and assist with efforts to achieve and maintain the 2015 ozone National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Monday, July 10, 2023 - 4:00am

Air Plan Revisions; California; San Joaquin Valley Air Pollution Control District; Stationary Source Permits

The Environmental Protection Agency (EPA) is taking final action on a permitting rule submitted as a revision to the San Joaquin Valley Air Pollution Control District (SJVAPCD or ``District'') portion of the California state implementation plan (SIP). We are finalizing a limited approval and limited disapproval of the rule. This revision concerns the District's new source review (NSR) permitting program for new and modified sources of air pollution under section 110(a)(2)(C) and part D of title I of the Clean Air Act (CAA or ``Act'').

Publication Date: 
Monday, July 10, 2023 - 4:00am

Air Plan Approval; New Hampshire; Reasonably Available Control Technology for the 2008 and 2015 Ozone Standards

The Environmental Protection Agency (EPA) is proposing to approve State Implementation Plan (SIP) revisions submitted by the State of New Hampshire. These revisions provide certifications that the State has adopted regulations meeting the requirements for reasonably available control technology (RACT) for the 2008 and 2015 ozone national ambient air quality standards (NAAQS).

Publication Date: 
Monday, July 10, 2023 - 4:00am

Air Plan Approval and Limited Approval-Limited Disapproval; California; Antelope Valley Air Quality Management District; Stationary Source Permits; New Source Review

The Environmental Protection Agency (EPA) is finalizing an approval and a limited approval and limited disapproval of revisions to the Antelope Valley Air Quality Management District (AVAQMD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or ``Act''). This action updates the District's portion of the California SIP with nine revised rules.

Publication Date: 
Monday, July 3, 2023 - 4:00am

Approval, Limited Approval and Limited Disapproval of California Air Plan Revisions; Mojave Desert Air Quality Management District; Stationary Source Permits

The Environmental Protection Agency (EPA) is finalizing an approval and a limited approval and limited disapproval of revisions to the Mojave Desert Air Quality Management District (MDAQMD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or ``Act''). This action updates the District's portion of the California SIP with ten revised rules.

Publication Date: 
Friday, June 30, 2023 - 4:00am

Air Plan Approval; Tennessee; Revisions to Startup, Shutdown, and Malfunction Rules

The Environmental Protection Agency (EPA) is approving portions of a State Implementation Plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on November 19, 2016, as supplemented on January 20, 2023, in response to a finding of substantial inadequacy and SIP call published on June 12, 2015, regarding provisions in the Tennessee SIP related to excess emissions during startup, shutdown, and malfunction (SSM) events.

Publication Date: 
Friday, June 23, 2023 - 4:00am

Air Plan Revisions; California; Mojave Desert Air Quality Management District; Oxides of Nitrogen

The Environmental Protection Agency (EPA) is finalizing a limited approval and limited disapproval a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) from industrial, institutional, and commercial boilers, steam generators, and process heaters.

Publication Date: 
Friday, June 16, 2023 - 4:00am

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