Sulfur oxides

Air Plan Approval; West Virginia; 2020 Amendments to West Virginia's Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the State of West Virginia. This 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. This action is being taken under the Clean Air Act (CAA).

Publication Date: 
Tuesday, February 9, 2021 - 4:00am

Air Plan Approval; Connecticut; Regulations To Limit Premises-Wide Actual and Potential Emissions From Major Stationary Sources of Air Pollution

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Connecticut. This revision proposes to approve into the Connecticut SIP state regulations that apply restrictions on emissions of criteria pollutants for which EPA has established National Ambient Air Quality Standards. Separately, we are also proposing to approve Connecticut regulations that apply restrictions on emissions of hazardous air pollutants (HAPs).

Publication Date: 
Monday, February 8, 2021 - 4:00am

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

The Environmental Protection Agency (EPA) is proposing to approve portions of revisions to a 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, January 19, 2021 - 4:00am

Review of the Ozone National Ambient Air Quality Standards

Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for photochemical oxidants including ozone (O<INF>3</INF>), the EPA is retaining the current standards, without revision.

Publication Date: 
Thursday, December 31, 2020 - 4:00am

Air Plan Approval; Missouri; Removal of Kansas City, Missouri Reid Vapor Pressure Requirement

The Environmental Protection Agency (EPA) is proposing approval of revision to the Missouri State Implementation Plan (SIP), submitted by the Missouri Department of Natural Resources (MoDNR) on September 15, 2020. The proposed revision removes the Kansas City, Missouri low Reid Vapor Pressure (RVP) requirement which required gasoline sold in the Kansas City, Missouri area to have a seven pounds per square inch Reid Vapor Pressure from June 1 to September 15.

Publication Date: 
Wednesday, December 23, 2020 - 4:00am

Review of the National Ambient Air Quality Standards for Particulate Matter

Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the Administrator has reached final decisions on the primary and secondary PM NAAQS.

Publication Date: 
Friday, December 18, 2020 - 4:00am

Approval and Promulgation of Air Quality Implementation Plans; Utah; Regional Haze State and Federal Implementation Plans

The Environmental Protection Agency (EPA) is finalizing approval of State Implementation Plan (SIP) revisions submitted by the State of Utah on July 3, 2019, as supplemented on December 3, 2019, to satisfy certain regional haze requirements for the regional haze program's first implementation period (Utah SIP revisions). The EPA is approving the Utah SIP revision that provides an alternative to best available retrofit technology (BART) controls for nitrogen oxides (NO<INF>X</INF>) at the PacifiCorp Hunter and Huntington power plants.

Publication Date: 
Friday, November 27, 2020 - 4:00am

Air Plan Approval; Wisconsin; Partial Approval and Partial Disapproval of the Oneida County SO2

The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Wisconsin State Implementation Plan (SIP) for attaining the 2010 primary, health- based 1-hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS or ``standard'') for the Oneida County SO<INF>2</INF> nonattainment area.

Publication Date: 
Wednesday, November 25, 2020 - 4:00am

Air Plan Approval; NC; Blue Ridge Paper SO2

The Environmental Protection Agency (EPA) is approving a source-specific State Implementation Plan (SIP) revision submitted by the State of North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), in final form, through a letter dated September 3, 2020.

Publication Date: 
Tuesday, November 24, 2020 - 4:00am

Air Plan Approval; ID, Incorporation by Reference Updates and Rule Revisions

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by Idaho on June 5, 2019 and May 27, 2020. The submitted revisions update the incorporation by reference of specific Federal requirements and clarify source permitting requirements. The EPA finds that the changes are consistent with Clean Air Act requirements.

Publication Date: 
Thursday, November 19, 2020 - 4:00am

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