Ozone

Air Plan Approval; Michigan; Revisions to Part 1 and 2 Rules; Withdrawal of Direct Final Rule

Due to the receipt of an adverse comment, the Environmental Protection Agency (EPA) is withdrawing the September 27, 2022, direct final rule approving revisions to Michigan Air Pollution Control Rules Part 1 Definitions, and Part 2 Air Use Approval for inclusion in the Michigan State Implementation Plan (SIP) and the removal of rules from the SIP that are part of Michigan's title V Renewable Operating Permit program, and rules that have been moved to other sections of the Michigan Administrative Code and approved into the Michigan SIP.

Publication Date: 
Tuesday, November 15, 2022 - 4:00am

Outer Continental Shelf Air Regulations; Consistency Update for Massachusetts

The Environmental Protection Agency (EPA) is updating a portion of the Outer Continental Shelf (OCS) Air Regulations. Requirements applying to OCS sources located within 25 miles of states' seaward boundaries must be updated periodically to remain consistent with the requirements of the corresponding onshore area (COA), as mandated by the Clean Air Act. The portion of the OCS air regulations that is being updated pertains to the requirements for OCS sources for which Massachusetts is the designated COA.

Publication Date: 
Tuesday, November 15, 2022 - 4:00am

Clean Air Plans; Base Year Emissions Inventories for the 2015 Ozone Standards; Nevada; Clark County, Las Vegas Valley

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA or ``Act''), revisions to the Nevada state implementation plan (SIP) concerning the base year emissions inventory requirements for the Las Vegas Valley ozone nonattainment area for the 2015 ozone national ambient air quality standards (NAAQS or ``standards'').

Publication Date: 
Monday, November 14, 2022 - 4:00am

Air Plan Approval; West Virginia; 2021 Amendments to West Virginia's Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of West Virginia. The revision updates West Virginia's incorporation by reference of EPA's national ambient air quality standards (NAAQS) and the associated monitoring reference and equivalent methods. EPA is approving these revisions to the West Virginia SIP in accordance with the requirements of the Clean Air Act (CAA).

Publication Date: 
Thursday, November 10, 2022 - 4:00am

Air Plan Approval; Indiana; Infrastructure SIP Requirements for the 2015 Ozone NAAQS and References to the Code of Federal Regulations

The Environmental Protection Agency (EPA) is approving elements of a State Implementation Plan (SIP) submission from Indiana regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA.

Publication Date: 
Wednesday, November 2, 2022 - 4:00am

Air Plan Approval; North Carolina; Miscellaneous Emission Control Standards Rule Revisions

The Environmental Protection Agency (EPA) is finalizing the approval of changes to the North Carolina State Implementation Plan (SIP), submitted by the State of North Carolina through the North Carolina Department of Environmental Quality (NCDEQ), Division of Air Quality (DAQ), through a letter dated April 13, 2021. This SIP revision includes changes to a subset of NCDEQ's regulations regarding emission control standards. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).

Publication Date: 
Tuesday, October 25, 2022 - 4:00am

Air Plan Approval; TN; Updates to References to Appendix W Modeling Guideline

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Tennessee on April 9, 2021. Specifically, EPA is approving updates to the incorporation by reference of Federal guidelines on air quality modeling in the Tennessee SIP. EPA is also converting the previous conditional approval regarding infrastructure SIP prevention of significant deterioration (PSD) elements for the 2015 ozone national ambient air quality standards (NAAQS) for Tennessee to a full approval.

Publication Date: 
Monday, October 24, 2022 - 4:00am

Determination of Attainment by the Attainment Date But for International Emissions for the 2015 Ozone National Ambient Air Quality Standard; Imperial County, California

The Environmental Protection Agency (EPA or ``Agency'') is determining that the Imperial County nonattainment area would have attained the 2015 ozone national ambient air quality standard (NAAQS) by the August 3, 2021 ``Marginal'' area attainment date, but for emissions emanating from outside the United States.

Publication Date: 
Thursday, October 20, 2022 - 4:00am

Determinations of Attainment by the Attainment Date, California Areas Classified as Serious for the 2008 Ozone National Ambient Air Quality Standards and Marginal for the 2015 Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is finalizing a determination that the Nevada County (Western part) and Ventura County areas in California, both classified as Serious for the 2008 ozone National Ambient Air Quality Standards (NAAQS), attained the 2008 ozone NAAQS by the July 20, 2021 attainment date. The EPA is also finalizing a determination that six areas in California classified as Marginal for the 2015 ozone NAAQS, attained the 2015 ozone NAAQS by the August 3, 2021 attainment date.

Publication Date: 
Thursday, October 20, 2022 - 4:00am

Air Plan Approval; North Carolina; Revisions to Exclusionary Rules and Permit Exemptions

The Environmental Protection Agency (EPA) is approving portions of revisions to the State Implementation Plan (SIP) submitted by the State of North Carolina, through the North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), on September 18, 2009, and July 10, 2019.

Publication Date: 
Tuesday, October 18, 2022 - 4:00am

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