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EPA/AR RIN: 2060-AQ99 Publication ID: Fall 2011 
Title: ●National Emission Standards for Aerospace Manufacturing and Rework Facilities Risk and Technology Review 
Abstract: On September 1, 1995 (60 FR 45948), EPA promulgated the National Emission Standards for Aerospace Manufacturing and Rework Facilities (40 CFR part 63, subpart GG) under section 112(d) of the Clean Air Act (CAA). The NESHAP sets Maximum Achievable Control Technology (MACT) standards for existing and new major sources of hazardous air pollutant emissions and includes standards to control volatile organic compounds (VOC) emissions. Under CAA section 112(d)(6) EPA is required to review standards issued under section 112 and to revise them "as necessary (taking into account developments in practices, processes and control technologies)" no less frequently than every 8 years. EPA also must evaluate the MACT standards within 8 years after promulgation and promulgate standards under CAA section 112 (f)(2) if required to provide an ample margin of safety to protect public health or prevent an adverse environmental effect. The source category will be assessed for inhalation risks, including cancer risk and incidence, population cancer risk, and non-cancer effects (chronic and acute). EPA also plans to evaluate multipathway risk associated with those source categories with significant levels of persistent and bioaccumulative HAP. The agency will follow the Benzene Policy to identify the source categories as low risk, acceptable risk, or unacceptable risk. EPA will then evaluate the effectiveness and cost of additional risk reduction options and make acceptability and ample-margin-of-safety determinations. If the need for additional controls are identified, the standards will include technology, work practice, or performance standards as amendments to the existing MACT standards. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 63   
Legal Authority: 42 USC 7412   
Legal Deadline:
Action Source Description Date
NPRM  Judicial    11/30/2011 
Final  Judicial    09/28/2012 
Timetable:
Action Date FR Cite
NPRM  12/00/2011    
Final Action  07/00/2012    
Additional Information: EPA Docket information: EPA-HQ-OAR-2004-0450
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: http://www.epa.gov/ttn/atw/aerosp/aeropg.html  
RIN Data Printed in the FR: No 
Agency Contact:
Brian Storey
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-04,
Research Triangle Park, NC 27711
Phone:919 541-1103
Fax:919 541-4991
Email: storey.brian@epa.gov

Bob Schell
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-05,
Research Triangle Park, NC 27711
Phone:919 541-4116
Fax:919 541-3207
Email: schell.bob@epa.gov