Sulfur oxides

Air Plan Approval; Michigan; Sulfur Dioxide Clean Data Determination for St. Clair

The Environmental Protection Agency (EPA) is making a determination that the St. Clair sulfur dioxide (SO<INF>2</INF>) nonattainment area has attained the 2010 primary SO<INF>2</INF> National Ambient Air Quality Standard (2010 SO<INF>2</INF> NAAQS). This determination suspends certain planning requirements and sanctions for the nonattainment area for as long as the area continues to attain the 2010 SO<INF>2</INF> NAAQS. EPA proposed this action on August 17, 2021, and received four supportive comments and one set of adverse comments.

Publication Date: 
Tuesday, December 7, 2021 - 4:00am

Air Plan Approval; AK; Removal of Excess Emissions Provision

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Alaska, through the Alaska Department of Environment Conservation, on January 9, 2017. The revision was submitted by Alaska in response to a finding of substantial inadequacy and SIP call published on June 12, 2015, for a provision in the Alaska SIP related to excess emissions during startup, shutdown, and malfunction (SSM) events.

Publication Date: 
Monday, December 6, 2021 - 4:00am

Air Plan Approval; North Carolina; Mecklenburg Monitoring, Recordkeeping, and Reporting Rule Revisions

The Environmental Protection Agency (EPA) is proposing 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.

Publication Date: 
Monday, December 6, 2021 - 4:00am

Air Plan Approval; North Carolina; Mecklenburg Air Quality Permit Rules Revisions

The Environmental Protection Agency (EPA) is approving 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.

Publication Date: 
Thursday, December 2, 2021 - 4:00am

Air Plan Approval; Ohio; Partial Approval and Partial Disapproval of the Muskingum River SO2

The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Ohio State Implementation Plan (SIP) intended to provide 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 Muskingum River SO<INF>2</INF> nonattainment area.

Publication Date: 
Tuesday, November 30, 2021 - 4:00am

Air Plan Approval; North Carolina; Mecklenburg: Source Testing

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

Publication Date: 
Friday, November 26, 2021 - 4:00am

Air Plan Approval; Pennsylvania; Revision of the Maximum Allowable Sulfur Content Limit for Number 2 and Lighter Commercial Fuel Oil in Allegheny County

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania. The revision updates Allegheny County's portion of the Pennsylvania SIP, which includes regulations concerning sulfur content in fuel oil. This revision pertains to the reduction of the maximum allowable sulfur content limit for Number 2 (No.

Publication Date: 
Friday, November 26, 2021 - 4:00am

Air Plan Approval; FL; Removal of Motor Vehicle Rules

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Florida, through the Florida Department of Environmental Protection (FDEP), via a letter dated July 2, 2020. The revision removes rules prohibiting tampering with motor vehicle air pollution control equipment and rules concerning visible emissions from motor vehicles. EPA is proposing to remove the tampering rules and visible emissions rules from the SIP pursuant to the Clean Air Act (CAA or Act) and applicable regulations.

Publication Date: 
Monday, November 22, 2021 - 4:00am

Air Plan Approval; Washington; Update to the Yakima Regional Clean Air Agency Wood Heater and Burn Ban Regulations

The Environmental Protection Agency (EPA) is proposing to approve submitted revisions to the Yakima Regional Clean Air Agency (YRCAA) regulations designed to control particulate matter from residential wood heaters, such as woodstoves and fireplaces. The updated YRCAA regulations set fine particulate matter trigger levels for impaired air quality burn bans, consistent with statutory changes enacted by the Washington State Legislature.

Publication Date: 
Thursday, November 18, 2021 - 4:00am

Air Plan Approval; North Carolina: Mecklenburg Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is finalizing 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 Air Quality (NCDAQ), on behalf of Mecklenburg County Air Quality via a letter dated April 24, 2020, and was received by EPA on June 19, 2020.

Publication Date: 
Wednesday, November 17, 2021 - 4:00am

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