Sulfur oxides

Air Plan Approval; Pennsylvania; Regulatory Updates to Nonattainment New Source Review (NNSR) Permitting Requirements for 2012 Fine Particulate Matter (PM2.5

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania, on March 10, 2020. This revision pertains to the Pennsylvania Department of Environmental Protection's (PADEP) amendments to 25 Pa. Code Chapters 121 (General Provisions) and 127 (Construction, Modification, Reactivation and Operation of Sources) to implement Federal nonattainment new source review (NNSR) provisions for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS).

Publication Date: 
Wednesday, May 12, 2021 - 4:00am

Air Plan Approval; Arizona; Miami Copper Smelter Sulfur Dioxide Control Measures

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Arizona State Implementation Plan (SIP). This revision concerns emissions of sulfur dioxide (SO<INF>2</INF>) from the copper smelter in Miami, Arizona. We are approving the rescission of two Arizona Department of Environmental Quality (ADEQ) Arizona Administrative Code (A.A.C.) provisions from the Arizona SIP that are no longer needed to regulate this emission source under the Clean Air Act (CAA or the ``Act'').

Publication Date: 
Monday, May 10, 2021 - 4:00am

Approval and Promulgation of Implementation Plans; South Dakota; Revisions to Air Rules of South Dakota

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of South Dakota on January 3, 2020 that revises the Administrative Rules of South Dakota (ARSD), Air Pollution Control Program, updating the chapter pertaining to definitions. The EPA is taking this action pursuant to the Clean Air Act (CAA).

Publication Date: 
Monday, May 10, 2021 - 4:00am

Air Plan Approval; Washington; Spokane Regional Clean Air Agency

The Environmental Protection Agency (EPA) is approving a revision to the Washington State Implementation Plan (SIP) that was submitted by the Department of Ecology (Ecology) in coordination with the Spokane Regional Clean Air Agency (SRCAA). This revision updates the SIP with local SRCAA regulations that apply in lieu of, or in supplement to, Ecology's statewide general air quality regulations for SRCAA's jurisdiction.

Publication Date: 
Monday, May 10, 2021 - 4:00am

Air Plan Approval; WA; Regional Haze Best Available Retrofit Technology Revision for TransAlta Centralia Generation Plant

The Environmental Protection Agency (EPA) is approving a source-specific State Implementation Plan (SIP) revision submitted by the Washington State Department of Ecology (Ecology) on December 18, 2020. The SIP revision makes changes to nitrogen oxide control requirements for the TransAlta Centralia Generation Plant (TransAlta).

Publication Date: 
Friday, May 7, 2021 - 4:00am

Air Plan Approval; New Hampshire; Sulfur Content Limitations for Fuels

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of New Hampshire on March 11, 2019. This revision establishes sulfur content limitations for fuels. In addition, the State requested withdrawal from the SIP of the existing sulfur limitations regulation, which will be superseded by the State's revised sulfur limitations regulation. The intended effect of this action is to approve the State's March 11, 2019 submittal into the New Hampshire SIP and remove from the SIP the superseded sulfur in fuels limitations.

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

Air Plan Approval; Ohio; NSR Program Administrative Rules

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), new and updated administrative rules for the Ohio State Implementation Plan (SIP) for the New Source Review (NSR) permitting program. The new and amended administrative rules in the Ohio Administrative Code (OAC) replace the currently effective procedural rules in the NSR SIP in their entirety. As part of this action, EPA is also approving the removal of obsolete language related to Significant Deterioration of Air Quality.

Publication Date: 
Friday, April 23, 2021 - 4:00am

Air Plan Approval; TN; Removal of Vehicle I/M Program; Middle Tennessee Area and Hamilton County

Through this supplemental notice of proposed rulemaking (``supplemental proposal'' or ``SNPRM''), the Environmental Protection Agency (EPA) is seeking public comment on the Agency's additional and clarified technical rationale related to the proposed approval of Tennessee's February 26, 2020, state implementation plan (SIP) revisions requesting the removal of Tennessee's motor vehicle inspection and maintenance (I/M) program requirements for Davidson, Sumner, Rutherford, Williamson, and Wilson Counties in Tennessee (also known as the Middle Tennessee Area) and Hamilton County (also known as

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

Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Regional Haze State Implementation Plan for the Second Implementation Period and Reasonably Available Control Technology for Major Stationary Sources of Nitrogen Oxides;

The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) submitted by the District of Columbia (``the District'' or ``DC'') through the Department of Energy and Environment (DOEE) on November 8, 2019, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule (RHR) for the program's second implementation period.

Publication Date: 
Thursday, April 15, 2021 - 4:00am

Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Regional Haze State Implementation Plan for the Second Implementation Period and Reasonably Available Control Technology for Major Stationary Sources of Nitrogen Oxides;

The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) submitted by the District of Columbia (``the District'' or ``DC'') through the Department of Energy and Environment (DOEE) on November 8, 2019, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule (RHR) for the program's second implementation period.

Publication Date: 
Thursday, April 15, 2021 - 4:00am

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