Hazardous substances

Designation of Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonic Acid (PFOS) as CERCLA Hazardous Substances

Under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended (``CERCLA'' or ``Superfund''), the Environmental Protection Agency (EPA or the Agency) is proposing to designate perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), including their salts and structural isomers, as hazardous substances.

Publication Date: 
Tuesday, September 6, 2022 - 4:00am

National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Arkansas

The Arkansas Department of Energy and Environment, Division of Environmental Quality (DEQ) has submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of certain National Emission Standards for Hazardous Air Pollutants (NESHAP) promulgated under the Clean Air Act (CAA), as provided for under the delegation mechanism previously approved by the Environmental Protection Agency (EPA). The EPA is approving DEQ's requested update of its NESHAP delegation.

Publication Date: 
Monday, August 29, 2022 - 4:00am

National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma

The Oklahoma Department of Environmental Quality (ODEQ) has submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of certain National Emission Standards for Hazardous Air Pollutants (NESHAP) for all sources (both part 70 and non-part 70 sources), as provided for under previously approved delegation mechanisms. The updated state regulations incorporate by reference certain NESHAP promulgated by the Environmental Protection Agency (EPA) at parts 61 and 63, as they existed through June 30, 2019.

Publication Date: 
Thursday, July 21, 2022 - 4:00am

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

The U.S. Environmental Protection Agency (EPA) is proposing amendments to the National Emission Standards for Hazardous Air Pollutants for Miscellaneous Coating Manufacturing (MCM NESHAP) facilities, as required by the Clean Air Act (CAA). In order to complete the required technology review that was originally promulgated on August 14, 2020, the EPA is proposing inorganic hazardous air pollutant (HAP) standards for process vessels.

Publication Date: 
Tuesday, June 7, 2022 - 4:00am

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

Because the Environmental Protection Agency (EPA) received public comment, which we intend to address, we are withdrawing the direct final rule for Delegation of New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants for the States of Arizona and California published on March 31, 2022. The EPA will take a final action on the proposed action in a separate subsequent final rulemaking.

Publication Date: 
Friday, May 27, 2022 - 4:00am

National Emission Standards for Hazardous Air Pollutants: General Provisions; Technical Correction

In this action, the U.S. Environmental Protection Agency (EPA) is making technical corrections to the general provisions of the National Emission Standards for Hazardous Air Pollutants (NESHAP). Specifically, on November 19, 2021, EPA finalized changes to the NESHAPs for Refractory Products Manufacturing, Carbon Black Production (major sources), Cyanide Chemicals Manufacturing, and Carbon Black Production Area Sources and, also amended the general provisions.

Publication Date: 
Monday, May 23, 2022 - 4:00am

Approval of Clean Air Act Operating Permit Program Revisions; Negative Declaration of Existing Hospital/Medical/Infectious Waste Incinerators and Administrative Updates; South Dakota

The Environmental Protection Agency (EPA or the ``Agency'') is proposing full approval of revisions to the South Dakota operating permit program for stationary sources under the Clean Air Act (CAA), title V (the ``title V program'') and a Clean Air Act (CAA) section 111(d)/129 negative declaration for incinerators subject to the Hospital/Medical/Infectious Waste Incinerators (HMIWI) Emissions Guidelines. EPA is proposing this action in accordance with the CAA.

Publication Date: 
Wednesday, May 18, 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

Asbestos Part 1: Chrysotile Asbestos; Regulation of Certain Conditions of Use Under Section 6(a) of the Toxic Substances Control Act (TSCA)

The Environmental Protection Agency (EPA) is proposing a rule under the Toxic Substances Control Act (TSCA) to address the unreasonable risk of injury to health it has identified for conditions of use of chrysotile asbestos following completion of the TSCA Risk Evaluation for Asbestos, Part 1: Chrysotile Asbestos. TSCA requires that EPA address the unreasonable risks of injury to health and environment by rule and to apply requirements to the extent necessary so that chrysotile asbestos no longer presents such risks.

Publication Date: 
Tuesday, April 12, 2022 - 4:00am

Air Plan Approval; Indiana, Ohio; Definition of Chemical Process Plants Under State Prevention of Significant Deterioration Regulations and Operating Permit Programs

The Environmental Protection Agency (EPA) is approving revisions to the State Implementation Plan (SIP) for Indiana and revisions to the operating permit program for Ohio. The revisions incorporate changes to the definition of ``chemical process plants'' under Indiana's Prevention of Significant Deterioration (PSD) regulations and under Ohio's operating permit program. EPA also provided an opportunity for public comment on similar changes to the definition of ``major stationary source'' in Ohio's PSD regulations that were approved into the SIP on October 28, 2014.

Publication Date: 
Thursday, April 7, 2022 - 4:00am

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