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EPA/AR RIN: 2060-AQ92 Publication ID: Fall 2013 
Title: Residual Risk and Technology Review Amendments to the Primary Aluminum Reduction National Emission Standard for Hazardous Air Pollutants (NESHAP) 
Abstract: In this action the EPA is conducting a risk assessment to determine if the promulgated maximum achievable control technology (MACT) standards for hazardous air pollutant (HAP) emissions from primary aluminum reduction facilities are already protective of public health with an ample margin of safety or must be revised in order to provide that level of protection. The EPA is also determining whether the promulgated MACT standards adequately protect against adverse environmental effects. The EPA is also reviewing technical progress in emissions control in the primary aluminum reduction source category to determine if it is necessary to revise the standards taking into account developments in practices, processes and control technologies. This action would implement sections 112(f)(2) and 112(d)(6) of the Clean Air Act. 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  Court Order  05/28/2015 
Other  Judicial  Supplemental NPRM--Court Order  08/28/2014 
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