Sulfur oxides

Air Plan Approval; South Carolina; 2018 General Assembly New Source Review Update

The Environmental Protection Agency (EPA) is proposing to approve State Implementation Plan (SIP) revisions submitted by the State of South Carolina, through the South Carolina Department of Health and Environmental Control (SCDHEC or Department), on April 24, 2020. The SIP revisions update the State's Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR) regulations.

Publication Date: 
Thursday, July 29, 2021 - 4:00am

Air Plan Approval; Missouri; Open Burning; Withdrawal

The Environmental Protection Agency (EPA) is withdrawing its proposed rule to approve Missouri's revisions to the state's open burning rule, as published in the Federal Register on January 13, 2020. By a letter to the EPA dated May 26, 2021, Missouri withdrew its request for approval of revisions to this rule in the state implementation plan (SIP).

Publication Date: 
Monday, July 26, 2021 - 4:00am

Air Plan Approval; Oklahoma; Interstate Visibility Transport

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve elements of a State Implementation Plan (SIP) submission from the State of Oklahoma for the 2015 Ozone National Ambient Air Quality Standard (NAAQS), and proposing to disapprove elements of two SIP submissions for the 2010 sulfur dioxide (SO<INF>2</INF>) and the 2012 fine particulate matter (PM<INF>2.5</INF>) NAAQS.

Publication Date: 
Thursday, July 22, 2021 - 4:00am

Air Plan Approval; Wisconsin; Attainment Plan for the Rhinelander SO2

The Environmental Protection Agency (EPA) is proposing to approve the State Implementation Plan (SIP) revision submitted by Wisconsin on March 29, 2021, which amends a SIP submission previously submitted to EPA on January 22, 2016 and supplemented on July 18, 2016, and November 29, 2016, for attaining the 1-hour sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS) for the Rhinelander SO<INF>2</INF> nonattainment area.

Publication Date: 
Thursday, July 22, 2021 - 4:00am

New Source Review Regulations; Correction

The Environmental Protection Agency (EPA) is amending several New Source Review (NSR) regulations by making the following types of changes: Correcting typographical and grammatical errors, removing court vacated rule language, removing or updating outdated or incorrect cross references, conforming certain provisions to changes contained in the 1990 Clean Air Act (CAA or Act) Amendments, and removing certain outdated grandfathering or transitional exemptions.

Publication Date: 
Monday, July 19, 2021 - 4:00am

Redesignation of Certain Unclassifiable Areas for the 2010 1-Hour Sulfur Dioxide (SO2

The Environmental Protection Agency (EPA) is redesignating the Lancaster County, Nebraska and Milam County, Texas unclassifiable areas initially designated during the EPA's Round 2 air quality designations for the 2010 1-Hour Sulfur Dioxide (SO<INF>2</INF>) Primary National Ambient Air Quality Standard (NAAQS). Specifically, the EPA now has sufficient information to determine that these unclassifiable areas in Nebraska and Texas are attaining the 2010 1-hour SO<INF>2</INF> primary NAAQS.

Publication Date: 
Friday, July 16, 2021 - 4:00am

Air Plan Approval; AL; NOX

The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) revision submitted by the State of Alabama through a letter dated February 27, 2020, to add regulations maintaining compliance with the State's nitrogen oxides (NO<INF>X</INF>) SIP Call obligations for large non-electricity generating units (non-EGUs), to repeal the State's previously sunsetted NO<INF>X</INF> Budget Trading Program regulations, and to repeal the State's Clean Air Interstate Rule (CAIR) regulations.

Publication Date: 
Wednesday, July 7, 2021 - 4:00am

Approval and Promulgation of Implementation Plans; Utah; 2017 Base Year Inventories for the 2015 8-Hour Ozone National Ambient Air Quality Standard for the Uinta Basin, Northern Wasatch Front and Southern Wasatch Front Nonattainment Areas

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Utah. The revision fulfills the base year inventory requirement for the 2015 8- hour ozone national ambient air quality standard (NAAQS) for the Uinta Basin, Northern Wasatch Front, and Southern Wasatch Front nonattainment areas (NAAs). Utah submitted the base year emissions inventories to meet, in part, the nonattainment requirements for Marginal ozone NAAs under the 2015 8-hour ozone NAAQS.

Publication Date: 
Tuesday, July 6, 2021 - 4:00am

Air Plan Approval; North Carolina; Mecklenburg Miscellaneous Rules 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: 
Friday, July 2, 2021 - 4:00am

Approval of Air Quality Implementation Plans; New York; Part 212, Process Operations

The Environmental Protection Agency (EPA) is proposing to approve a revision to the New York State Implementation Plan concerning process operations. The intended effect of this revision is to streamline and update provisions, align those provisions with permitting regulations, and provide regulatory certainly for the regulated community. New York's comprehensive submittal also included Operating Permit Program requirements; however, the EPA will be acting on these revisions under a separate action.

Publication Date: 
Thursday, July 1, 2021 - 4:00am

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