Nitrogen oxides

Air Plan Approval; Arkansas; Revisions to Rule 19 of the Arkansas Plan

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving portions of the revisions to the Arkansas State Implementation Plan (SIP) including revisions to the Arkansas Pollution Control and Ecology Commission's (``Commission'' or APC&EC) Rule No. 19, Rules of the Arkansas Plan of Implementation for Air Pollution Control submitted by the Arkansas Department of Energy and Environment, Division of Environmental Quality (DEQ) via the Arkansas Governor's Office on June 22, 2022.

Publication Date: 
Friday, December 29, 2023 - 4:00am

Air Plan Approval; California; San Diego County Air Pollution Control District; Oxides of Nitrogen

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the San Diego County Air Pollution Control District (SDCAPCD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) from small boilers, process heaters, steam generators, and large water heaters. We are approving a local rule that regulates these emission sources under the Clean Air Act (CAA or ``the Act'').

Publication Date: 
Thursday, December 21, 2023 - 4:00am

Air Plan Revisions; California; Sacramento Metropolitan Air Quality Management District

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Sacramento Metropolitan Air Quality Management District (SMAQMD) portion of the California State Implementation Plan (SIP) concerning a rule submitted to address section 185 of the Clean Air Act (CAA or the Act). We are taking comments on this proposal and plan to follow with a final action.

Publication Date: 
Friday, December 15, 2023 - 4:00am

Air Plan Disapproval; Delaware; Removal of Excess Emissions Provisions

The Environmental Protection Agency (EPA) is disapproving certain portions of a state implementation plan (SIP) revision submitted by the State of Delaware, through the Delaware Department of Natural Resources and Environmental Control (DNREC), on November 22, 2016. The revision was submitted by Delaware in response to a national finding of substantial inadequacy and SIP call published on June 12, 2015, which included certain provisions in the Delaware SIP related to excess emissions during startup, shutdown, and malfunction (SSM) events.

Publication Date: 
Monday, October 23, 2023 - 4:00am

Air Plan Revisions; California; Placer County Air Pollution Control District; General Permit Requirements, New Source Review

The Environmental Protection Agency (EPA) is taking final action on two permitting rules submitted as a revision to the Placer County Air Pollution Control District (PCAPCD or ``District'') portion of the California State Implementation Plan (SIP). We are finalizing an approval of one rule and finalizing a limited approval and limited disapproval of the second rule. These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under title I of the Clean Air Act (CAA or ``Act'').

Publication Date: 
Tuesday, September 26, 2023 - 4:00am

Air Plan Approval; Georgia;

The Environmental Protection Agency (EPA) is approving changes to the Georgia State Implementation Plan (SIP), submitted by the State of Georgia through the Georgia Environmental Protection Division (GA EPD) via a letter dated November 4, 2021. The SIP revision revises Georgia's Stage I vapor recovery rules primarily by removing outdated references and making several clarifying edits. The revision also updates several definitions and makes two substantive changes. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).

Publication Date: 
Wednesday, August 2, 2023 - 4:00am

Federal “Good Neighbor Plan” for the 2015 Ozone National Ambient Air Quality Standards; Response to Judicial Stays of SIP Disapproval Action for Certain States

The Environmental Protection Agency (EPA) is taking interim final action to stay, for emissions sources in Arkansas, Kentucky, Louisiana, Mississippi, Missouri, and Texas only, the effectiveness of the federal implementation plan (FIP) requirements established to address the obligations of these and other states to mitigate interstate air pollution with respect to the 2015 national ambient air quality standards (NAAQS) for ozone (the Good Neighbor Plan).

Publication Date: 
Monday, July 31, 2023 - 4:00am

Air Plan Approval and Limited Approval-Limited Disapproval; California; Antelope Valley Air Quality Management District; Stationary Source Permits; New Source Review

The Environmental Protection Agency (EPA) is finalizing an approval and a limited approval and limited disapproval of revisions to the Antelope Valley Air Quality Management District (AVAQMD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or ``Act''). This action updates the District's portion of the California SIP with nine revised rules.

Publication Date: 
Monday, July 3, 2023 - 4:00am

Air Plan Revisions; California; Yolo-Solano Air Quality Management District

The Environmental Protection Agency (EPA) is taking final action to partially approve and partially disapprove a revision to the Yolo-Solano Air Quality Management District (YSAQMD) portion of the California State Implementation Plan (SIP). The revision concerns the YSAQMD's demonstration regarding reasonably available control technology (RACT) requirements for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS or ``standards'') in the portion of the Sacramento Metropolitan nonattainment area under the jurisdiction of the YSAQMD.

Publication Date: 
Friday, June 30, 2023 - 4:00am

Approval, Limited Approval and Limited Disapproval of California Air Plan Revisions; Mojave Desert Air Quality Management District; Stationary Source Permits

The Environmental Protection Agency (EPA) is finalizing an approval and a limited approval and limited disapproval of revisions to the Mojave Desert Air Quality Management District (MDAQMD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or ``Act''). This action updates the District's portion of the California SIP with ten revised rules.

Publication Date: 
Friday, June 30, 2023 - 4:00am

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