Administrative practice and procedure

Air Quality State Implementation Plans; Approvals and Promulgations: California; San Diego County Air Pollution Control District; Permits

The Environmental Protection Agency (EPA) is proposing to approve four permitting rules submitted as a revision to the San Diego County Air Pollution Control District (SDAPCD 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 section 110(a)(2)(C) and part D of title I of the Clean Air Act (CAA or ``Act'').

Publication Date: 
Thursday, May 12, 2022 - 4:00am

National Emission Standards for Hazardous Air Pollutants: Mercury Cell Chlor-Alkali Plants Residual Risk and Technology Review

This action finalizes the residual risk and technology review (RTR) conducted for the Mercury Cell Chlor-Alkali Plants source category regulated under national emission standards for hazardous air pollutants (NESHAP). In addition, this action finalizes the beyond-the- floor determination that EPA performed in response to a petition for reconsideration of the 2003 NESHAP.

Publication Date: 
Friday, May 6, 2022 - 4:00am

Approval and Promulgation of State Air Quality Plans for Designated Facilities and Pollutants; Texas; Control of Emissions From Existing Other Solid Waste Incineration Units

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving the CAA section 111(d)/129 state plan submitted by the State of Texas for sources subject to the Other Solid Waste Incineration Units (OSWI) Emission Guidelines (EG). The Texas OSWI plan was submitted to fulfill State obligations under CAA section 111(d)/129 to implement and enforce the requirements under the OSWI EG. The EPA is approving the state plan in part and amending the agency regulations in accordance with the requirements of the CAA.

Publication Date: 
Thursday, May 5, 2022 - 4:00am

Protection of Stratospheric Ozone: Listing of HFO-1234yf Under the Significant New Alternatives Policy Program for Motor Vehicle Air Conditioning in Nonroad Vehicles and Servicing Fittings for Small Refrigerant Cans

Pursuant to the EPA's Significant New Alternatives Policy program, this action lists the refrigerant 2,3,3,3-tetrafluoroprop-1- ene, also known as HFO-1234yf or R-1234yf, as acceptable, subject to use conditions, in the motor vehicle air conditioning end-use for certain types of newly manufactured nonroad (also called off-road) vehicles, which includes some vehicles that are also considered heavy- duty vehicles.

Publication Date: 
Wednesday, May 4, 2022 - 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))

The U.S. Environmental Protection Agency (EPA) is proposing to revise the EPA's regulatory definition of volatile organic compounds (VOC) under the Clean Air Act (CAA). This action proposes to add (2E)- 1,1,1,4,4,4-hexafluorobut-2-ene (also known as trans-1,1,1,4,4,4- hexafluorobut-2-ene, and HFO-1336mzz(E); CAS number 66711-86-2) to the list of compounds excluded from the regulatory definition on the basis that this compound makes a negligible contribution to tropospheric ozone (O<INF>3</INF>) formation.

Publication Date: 
Thursday, April 28, 2022 - 4:00am

Renewable Fuel Standard Program: Canola Oil Pathways to Renewable Diesel, Jet Fuel, Naphtha, Liquefied Petroleum Gas and Heating Oil

In this proposed rule, the Environmental Protection Agency (EPA) is providing an opportunity for comment on a proposed analysis of the lifecycle greenhouse gas (GHG) emissions associated with certain biofuels that are produced from canola/rapeseed oil.

Publication Date: 
Monday, April 18, 2022 - 4:00am

Determinations of Attainment by the Attainment Date, Extension of the Attainment Date, and Reclassification of Areas Classified as Serious for the 2008 Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) proposes three actions pursuant to section 181(b)(2) of the Clean Air Act (CAA) related to seven areas classified as ``Serious'' for the 2008 ozone National Ambient Air Quality Standards (NAAQS). First, the Agency proposes to determine that one area attained the 2008 ozone NAAQS by the July 20, 2021, attainment date.

Publication Date: 
Wednesday, April 13, 2022 - 4:00am

Determinations of Attainment by the Attainment Date, Extensions of the Attainment Date, and Reclassification of Areas Classified as Marginal for the 2015 Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA or Agency) is proposing three actions pursuant to section 181(b)(2) of the Clean Air Act (CAA) related to the attainment date for 31 areas classified as ``Marginal'' nonattainment for the 2015 ozone National Ambient Air Quality Standards (NAAQS). First, the Agency is proposing to determine that six areas attained the standard by the applicable August 3, 2021, attainment date. Second, the Agency is proposing to grant a 1-year attainment date extension for the Uinta Basin, Utah, nonattainment area.

Publication Date: 
Wednesday, April 13, 2022 - 4:00am

Removal of Title V Emergency Affirmative Defense Provisions From State Operating Permit Programs and the Federal Operating Permit Program

The Environmental Protection Agency (EPA) is re-proposing a document, first proposed in 2016, which would remove the emergency affirmative defense provisions found in the regulations for state and federal operating permit programs under the Clean Air Act (CAA). The purpose of these provisions has been to establish an affirmative defense that sources can assert in civil enforcement cases when noncompliance with certain emission limitations in operating permits occurs because of qualifying ``emergency'' circumstances.

Publication Date: 
Friday, April 1, 2022 - 4:00am

Delegation of New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants for the States of Arizona and California

The EPA is taking direct final action to update the Code of Federal Regulations delegation tables to reflect the current delegation status of New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants in Arizona and California.

Publication Date: 
Thursday, March 31, 2022 - 4:00am

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