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EPA/OAR RIN: 2060-AU64 Publication ID: Spring 2021 
Title: National Emission Standards for Hazardous Air Pollutants: Cyanide Chemicals Manufacturing 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 Cyanide Chemicals Manufacturing. The Cyanide Chemicals Manufacturing NESHAP, subpart YY, was promulgated pursuant to section 112(d) of the Clean Air Act (CAA) on July 12, 2002. The NESHAP established emission limitations and work practice requirements based on maximum achievable control technology (MACT) for controlling emissions of hazardous air pollutants (HAP) from Cyanide Chemicals Manufacturing facilities. The HAP emitted from Cyanide Chemicals Manufacturing include hydrogen cyanide, sodium cyanide, acrylonitrile and acetonitrile. This action will implement the residual risk review requirements of CAA section 112(f)(2) and the technology review requirements of CAA section 112(d)(6). The statute directs the EPA to promulgate emission standards under CAA 112(f)(2) if such standards are required to provide an ample margin of safety to protect public health or to prevent, taking relevant factors into account, an adverse environmental effect. Any such standards are to be promulgated within 8 years after promulgation of MACT standards under CAA section 112(d). CAA section 112(d)(6) requires the EPA to review and revise the MACT standards as necessary, taking into account developments in practices, processes and control technologies, no less often than every 8 years. The proposed rule was published in the Federal Register on January 15, 2021 (86 FR 3906). Pursuant to a court order (Community In-Power and Development Association v. Pruitt, No. 16-cv-1074KBJ (D.D.C. 2018)), the EPA is obligated to complete this final action by October 1, 2021. 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 63   
Legal Authority: 42 U.S.C. 7412 Clean Air Act   
Legal Deadline:
Action Source Description Date
Final  Judicial  16-cv-01074-KBJ; 3/31/18  10/01/2021 
Timetable:
Action Date FR Cite
NPRM  01/15/2021  86 FR 3906   
NPRM Comment Period Extended  02/23/2021  86 FR 10909   
NPRM Comment Period End  03/01/2021 
NPRM Comment Period Extended End  03/24/2021 
Final Rule  10/00/2021 
Additional Information: Docket #:EPA-HQ-OAR-2020-0532
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: https://www.epa.gov/stationary-sources-air-pollution/acetal-resins-acrylic-modacrylic-fibers-carbon-black-hydrogen   Public Comment URL: https://www.regulations.gov/docket/EPA-HQ-OAR-2020-0532/document  
Sectors Affected: 325199 All Other Basic Organic Chemical Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Nathan Topham
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-02,
Research Triangle Park, NC 27711
Phone:919 541-0483
Fax:919 541-4991
Email: topham.nathan@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