Administrative practice and procedure

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

The Environmental Protection Agency (EPA) is approving in part, conditionally approving in part, and disapproving 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 reclassifying a region of the State for emergency episode planning purposes with respect to ozone. Finally, we are approving a regulatory revision into the Nevada SIP.

Publication Date: 
Friday, May 19, 2023 - 4:00am

Review of Standards of Performance for Automobile and Light Duty Truck Surface Coating Operations

The Environmental Protection Agency (EPA) is finalizing amendments to the new source performance standards for Automobile and Light Duty Truck Surface Coating Operations pursuant to the review required by the Clean Air Act. The EPA determined that revisions to the NSPS were needed to reflect the degree of emission limitation achievable through the application of the best system of emission reduction (BSER).

Publication Date: 
Tuesday, May 9, 2023 - 4:00am

Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration, Air Conditioning, and Fire Suppression

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action lists certain substances as acceptable, subject to use conditions, in the refrigeration and air conditioning sector for chillers--comfort cooling, residential dehumidifiers, residential and light commercial air conditioning and heat pumps, and a substance as acceptable, subject to use conditions and narrowed use limits, in very low temperature refrigeration.

Publication Date: 
Friday, April 28, 2023 - 4:00am

New Source Performance Standards Review for Industrial Surface Coating of Plastic Parts for Business Machines

The Environmental Protection Agency (EPA) is finalizing amendments to the new source performance standards for Industrial Surface Coating of Plastic Parts for Business Machines pursuant to the review required by the Clean Air Act. For affected facilities that commence construction, modification, or reconstruction after June 21, 2022, the EPA is, in a new subpart, finalizing volatile organic compound (VOC) emission limitations for prime, color, texture, and touch-up coating operations. We are also finalizing a requirement for electronic submission of periodic compliance reports.

Publication Date: 
Monday, March 27, 2023 - 4:00am

Approval and Promulgation of State Plans for Designated Facilities and Pollutants: Maine; 111(d)/129 Revised State Plan for Large Municipal Waste Combustors and State Plan for Small Municipal Waste Combustors

The Environmental Protection Agency (EPA) is approving the Clean Air Act (CAA) State Plan for Municipal Waste Combustor (MWC) units submitted by the Maine Department of Environmental Protection (Maine DEP). This submission includes revisions to Maine's previously approved State Plan for existing Large MWCs in response to amended emission guidelines (EGs) for Large MWCs. This submission also includes a State Plan for existing Small MWCs.

Publication Date: 
Tuesday, March 14, 2023 - 4:00am

National Emission Standards for Hazardous Air Pollutants: Miscellaneous Coating Manufacturing Technology Review

The U.S. Environmental Protection Agency (EPA) is taking final action on the technology review conducted on the Miscellaneous Coating Manufacturing (MCM) source category regulated under the National Emission Standards for Hazardous Air Pollutants (NESHAP). These final amendments include provisions for inorganic hazardous air pollutant (HAP) standards for process vessels.

Publication Date: 
Wednesday, February 22, 2023 - 4:00am

Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds-Exclusion of (2E)-1,1,1,4,4,4-hexafluorobut-2-ene (HFO-1336mzz(E))

On April 28, 2022, the U.S. Environmental Protection Agency (EPA) published a proposed rule seeking comments in response to a petition requesting the revision of the EPA's regulatory definition of volatile organic compounds (VOC) to exempt trans-1,1,1,4,4,4- hexafluorobut-2-ene (also known as HFO-1336mzz(E); CAS number 66711-86- 2). The EPA is now taking final action to revise the regulatory definition of VOC under the Clean Air Act (CAA).

Publication Date: 
Wednesday, February 8, 2023 - 4:00am

Air Quality Implementation Plan; California; Tuolumne County Air Pollution Control District; Stationary Source Permits

The Environmental Protection Agency (EPA) is finalizing a revision to the Tuolumne County Air Pollution Control District's (TCAPCD or ``District'') portion of the California State Implementation Plan (SIP). This revision governs the District's issuance of permits for stationary sources, and focuses on the preconstruction review and permitting of major sources and major modifications under part D of title I of the Clean Air Act (CAA or ``the Act'').

Publication Date: 
Tuesday, February 7, 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 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

Reconsideration of the National Ambient Air Quality Standards for Particulate Matter

Based on the Environmental Protection Agency's (EPA's) reconsideration of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the EPA proposes to revise the primary annual PM<INF>2.5</INF> standard by lowering the level. The Agency proposes to retain the current primary 24-hour PM<INF>2.5</INF> standard and the primary 24-hour PM<INF>10</INF> standard.

Publication Date: 
Friday, January 27, 2023 - 4:00am

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