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EPA/AR RIN: 2060-AQ92 Publication ID: Spring 2014 
Title: Residual Risk and Technology Review Amendments to the Primary Aluminum Reduction National Emission Standard for Hazardous Air Pollutants (NESHAP) 
Abstract: The Clean Air Act requires EPA to review maximum achievable control technology (MACT) standards and to revise them "as necessary (taking into account developments in practices, processes, and control technologies)" no less frequently than every 8 years. Under the "residual risk" provision of the Clean Air Act, EPA must evaluate the MACT standards within 8 years after promulgation and promulgate standards if required to provide an ample margin of safety to protect public health or prevent an adverse environmental effect while considering the economic impacts of controls, technological feasibility, uncertainties, and any other relevant factors. The EPA promulgated National Emission Standards for Hazardous Air Pollutants (NESHAP) for Primary Aluminum Reduction Plants (found in 40 CFR part 63, subpart LL) in 1997. This NESHAP applies to the owner or operator of each new pitch storage tank or new or existing potline, paste production plant, or anode bake furnace associated with primary aluminum reduction which is located at a major source, as defined in 40 CFR section 63.2. The EPA proposed standards addressing residual risk and technology developments on December 6, 2011. If finalized, the proposed amendments would include new emissions standards for carbonyl sulfide emissions from new and existing potlines; new emissions standards for polycyclic organic matter (POM) from new and existing prebake potlines and existing pitch storage tanks; reduce the emissions standards for POM from existing Soderberg potlines; eliminate the startup, shutdown and malfunction exemption; and make certain other technical and editorial changes. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 112   
Legal Authority: 42 USC 7412   
Legal Deadline:
Action Source Description Date
Final  Judicial  Final Action: 5/28/15 -Consent Decree deadline for Final Action per 11/13/13 joint Stipulation; Sierra Club v. Jackson; # 09-0152; USDC Northern District of California  05/28/2015 
NPRM  Judicial  As per 4 day extension granted on 10/31. (Sierra Club v. Jackson, 09-0152, USDC Northern District of CA)  11/04/2011 
Timetable:
Action Date FR Cite
NPRM  12/06/2011  76 FR 76260   
NPRM Comment Period Extended  01/19/2012  77 FR 2677   
Supplemental NPRM  09/00/2014 
Final Rule  06/00/2015 
Additional Information: Docket #:EPA-HQ-OAR-2011-0797
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, Local, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 33131 Alumina and Aluminum Production and Processing 
RIN Data Printed in the FR: No 
Agency Contact:
David Putney
Environmental Protection Agency
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

Rochelle Boyd
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D-243-02,
Research Triangle Park, NC 27711
Phone:919 541-1390
Email: boyd.rochelle@epa.gov