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EPA/OAR RIN: 2060-AT01 Publication ID: Fall 2019 
Title: National Emission Standards for Hazardous Air Pollutants: Engine Test Cells/Stands Residual Risk and Technology Review 

This final rule addresses the agency's residual risk and technology review (RTR) of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Engine Test Cell/Stands. The Engine Test Cell NESHAP, subpart PPPPP, was promulgated pursuant to section 112(d) of the Clean Air Act (CAA) on May 27, 2003. 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 engine test cells. The HAP emitted from engine test cells include formaldehyde, toluene, and benzene. This action implements 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 eight 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. Pursuant to a court order, the EPA is obligated to complete the final action by March 13, 2020. In consideration of this deadline, which also applies to 19 other RTR source categories, we established an internal schedule for this RTR to be proposed and finalized prior to the consent decree deadline. The proposed rule did not make any changes based on the risk and technology reviews. The EPA did propose to amend provisions addressing periods of startup, shutdown and malfunction, require electronic reporting, make clarifying and technical corrections.

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: Undetermined 
EO 13771 Designation: Not subject to, not significant 
CFR Citation: 40 CFR 63   
Legal Authority: 42 U.S.C. 7412, Clean Air Act   
Legal Deadline:
Action Source Description Date
Final  Judicial  15-cv-00512-TSC; 3/13/17.  03/13/2020 
Action Date FR Cite
NPRM  05/08/2019  84 FR 20208   
NPRM Comment Period End  06/24/2019 
Final Rule  03/00/2020 
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Undetermined 
Federalism: Undetermined 
Included in the Regulatory Plan: No 
Sectors Affected: 333111 Farm Machinery and Equipment Manufacturing; 333112 Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing; 333120 Construction Machinery Manufacturing; 333611 Turbine and Turbine Generator Set Units Manufacturing; 333612 Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing; 333618 Other Engine Equipment Manufacturing; 335312 Motor and Generator Manufacturing; 336111 Automobile Manufacturing; 336112 Light Truck and Utility Vehicle Manufacturing; 336120 Heavy Duty Truck Manufacturing; 336350 Motor Vehicle Transmission and Power Train Parts Manufacturing; 336411 Aircraft Manufacturing; 336412 Aircraft Engine and Engine Parts Manufacturing; 336414 Guided Missile and Space Vehicle Manufacturing; 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing; 336992 Military Armored Vehicle, Tank, and Tank Component Manufacturing; 481111 Scheduled Passenger Air Transportation; 488190 Other Support Activities for Air Transportation; 541380 Testing Laboratories; 54171 Research and Development in the Physical, Engineering, and Life Sciences; 611692 Automobile Driving Schools; 811111 General Automotive Repair; 811118 Other Automotive Mechanical and Electrical Repair and Maintenance; 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance; 811411 Home and Garden Equipment Repair and Maintenance; 92711 Space Research and Technology; 92811 National Security 
RIN Data Printed in the FR: No 
Agency Contact:
Jim Eddinger
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-5426

Melanie King
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-2469