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EPA/OAR RIN: 2060-AU65 Publication ID: Fall 2024 
Title: National Emission Standards for Hazardous Air Pollutants: Primary Magnesium Refining Residual Risk and Technology Review 
Abstract:

This action will address the agency’s residual risk and technology review (RTR) of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Primary Magnesium Refining source category. This action will implement the residual risk review requirements of section 112(f)(2) of the Clean Air Act (CAA) and the technology review requirements of CAA section 112(d)(6). The current Primary Magnesium Refining NESHAP was promulgated pursuant to CAA section 112(d) on October 10, 2003. The NESHAP establishes emission limitations, work practice standards, and operation and maintenance requirements based on maximum achievable control technology (MACT) for controlling emissions of hazardous air pollutants (HAP) from the source category. The HAP emitted from this source category include, but are not limited to, hydrochloric acid, chlorine, dioxins and metal HAP. Pursuant to a court order (Community In-Power and Development Association, Inc. et al v. Pruitt, No. 1:16-cv-1074-KBJ (D.D.C. 2018)), the EPA must complete the final action for the Primary Magnesium Refining NESHAP by July 31, 2026.

 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Undetermined  Unfunded Mandates: No 
CFR Citation: 40 CFR 63 subpart PPP   
Legal Authority: 42 U.S.C. 7607(d)    42 U.S.C. 7412   
Legal Deadline:
Action Source Description Date
Final  Judicial  Court Order: Final, 1:16-cv-01074-KBJ; 03/31/22.  07/31/2026 
Timetable:
Action Date FR Cite
NPRM  01/08/2021  86 FR 1390   
Supplemental NPRM  11/00/2025 
Additional Information: EPA-HQ-OAR-2020-0535.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 331410 Nonferrous Metal (except Aluminum) Smelting and Refining 
RIN Data Printed in the FR: No 
Agency Contact:
David Putney
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D-243-02,
Research Triangle Park, NC 27711
Phone:919 541-2016
Fax:919 541-4991
Email: putney.david@epa.gov

Chuck French
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-02,
Research Triangle Park, NC 27711
Phone:919 541-7912
Fax:919 541-4991
Email: french.chuck@epa.gov