Nitrogen oxides

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 proposing approval, and a limited approval and limited disapproval of a revision to the Antelope Valley Air Quality Management District (AVAQMD or ``District'') portion of the California State Implementation Plan (SIP). The EPA is proposing to take action on nine rules submitted on August 3, 2021. We are proposing approval of three rules, and limited approval and limited disapproval of six rules.

Publication Date: 
Monday, January 30, 2023 - 4:00am

Air Plan Approval; AK; Adoption and Permitting Rule Updates

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Alaska State Implementation Plan submitted on May 16, 2022, and August 11, 2022. The revisions proposed for approval update Alaska's adoption by reference date for Federal regulations relied upon for implementation of the air program, including permitting requirements and air pollution test methods.

Publication Date: 
Wednesday, January 18, 2023 - 4:00am

Finding of Failure To Submit State Implementation Plan Revisions Required Under Clean Air Act Section 185; California; Sacramento Metro Area

The EPA is taking final action finding that the state of California has failed to submit state implementation plan (SIP) revisions for the Sacramento Metro nonattainment area to satisfy certain requirements of the Clean Air Act (CAA) for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS). Specifically, these requirements pertain to the assessment and collection of fees under CAA section 185. This action triggers certain CAA deadlines for the imposition of sanctions if California does not submit the required SIP revisions within the specified timeframes.

Publication Date: 
Tuesday, January 17, 2023 - 4:00am

Air Plan Approval; North Carolina; Charlotte-Gastonia-Rock Hill Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is finalizing approval of a state implementation plan (SIP) revision submitted by the State of North Carolina, through the North Carolina Department of Environment Quality, Division of Air Quality (DAQ), via a letter dated December 9, 2021.

Publication Date: 
Friday, January 13, 2023 - 4:00am

Approval of the Clean Air Act, Authority for Hazardous Air Pollutants: Asbestos Management and Control; State of New Hampshire Department of Environmental Services

The Environmental Protection Agency (EPA) is proposing to approve the amended ``Env-Sw 2100: Management and Control of Asbestos Sites Not Operated after July 9, 1981,'' effective September 1, 2018 (``amended Asbestos Disposal Site Rule'') in place of the National Emission Standard for Asbestos (``Asbestos NESHAP'') provisions for inactive waste disposal sites not operated after July 9, 1981 submitted by the State of New Hampshire.

Publication Date: 
Thursday, January 12, 2023 - 4:00am

Determination of Attainment by the Attainment Date, Clean Data Determination, and Approval of Base Year Emissions Inventory for the Imperial County, California Nonattainment Area for the 2012 Annual Fine Particulate Matter NAAQS

The Environmental Protection Agency (EPA) is determining that the Imperial County, California fine particulate matter (PM<INF>2.5</INF>) nonattainment area (``Imperial PM<INF>2.5</INF> nonattainment area'') attained the 2012 annual PM<INF>2.5</INF> national ambient air quality standards (NAAQS or ``standard'') by its December 31, 2021 ``Moderate'' area attainment date. This determination is based upon ambient air quality monitoring data from 2019 through 2021.

Publication Date: 
Wednesday, January 11, 2023 - 4:00am

Partial Approval, Conditional Approval, and Partial Disapproval of Air Quality State Implementation Plans; Nevada; Infrastructure Requirements for Ozone

The EPA is proposing to approve in part, conditionally approve in part, and disapprove in part a state implementation plan (SIP) revision submitted by the State of Nevada pursuant to the requirements of the Clean Air Act (CAA or ``Act'') for the implementation, maintenance, and enforcement of the 2015 national ambient air quality standards (NAAQS) for ozone. As part of this action, we are proposing to reclassify a region of the State for emergency episode planning purposes with respect to ozone. Finally, we are proposing to approve a regulatory revision into the Nevada SIP.

Publication Date: 
Wednesday, January 11, 2023 - 4:00am

Finding of Failure To Attain and Reclassification of Las Vegas Area as Moderate for the 2015 Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA or Agency) is determining that the Las Vegas, Nevada nonattainment area (``Las Vegas'') failed to attain the 2015 ozone National Ambient Air Quality Standard (NAAQS) by the applicable attainment date. The effect of failing to attain by the applicable attainment date is that Las Vegas is being reclassified by operation of law as ``Moderate'' nonattainment for the 2015 ozone NAAQS on January 5, 2023, the effective date of this final rule.

Publication Date: 
Thursday, January 5, 2023 - 4:00am

Air Plan Approval; Arizona; Maricopa County; Power Plants

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Maricopa County Air Quality Department's (MCAQD or County) portion of the Arizona State Implementation Plan (SIP). The revision addresses Arizona's reasonably available control technology (RACT) SIP obligations for the Phoenix- Mesa ozone nonattainment area that is classified as Moderate nonattainment for the 2008 ozone national ambient air quality standards (NAAQS).

Publication Date: 
Friday, December 30, 2022 - 4:00am

Air Plan Approval; California; San Joaquin Valley Unified Air Pollution Control District; South Coast Air Quality Management District

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) and South Coast Air Quality Management District (SCAQMD) portions of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) and oxides of nitrogen (NO<INF>X</INF>) from flares. We are approving these local rules to regulate these emission sources under the Clean Air Act (CAA or the Act).

Publication Date: 
Wednesday, December 28, 2022 - 4:00am

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