G/TBT/N/USA/1556/Add.2  
 
13 August 2020  
(20-5558) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  13 August 2020 , is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title: National Emission Standards for Hazardous Air Pollutants: Miscellaneous Organic Chemical 
Manufacturing Residual Risk and Technology Review  
 
Reason for Addendum:  
[  ] Comment period changed - date:   
[X] Notified measure adopted - date: 12 August 2020  
[  ] Notified measure published - date:  
[X] Notified measure enters into force - date: 12 August 2020  
[X] Text of final measure available from1:  
https://www.govinfo.gov/co ntent/pkg/FR -2020-08-12/html/2020 -12776.htm  
https://www.govinfo.gov/content/pkg/FR -2020-08-12/pdf/2020 -12776.pdf  
https://members.wto.org/crnattachments/2020/TBT/USA/final_measure/20_4867_00_
e.pdf 
[  ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[  ] Content or scope of notified measure changed  
New deadline for comments (i f applicable):   
[  ] Interpretive guidance issued and text available from1:  
[  ] Other:  
 
Description:  AGENCY: Environmental Protection Agency (EPA)  
ACTION: Final rule  
SUMMARY: This action finalizes the residual risk and technology review (RTR) conducted for the 
Miscellaneous Organic Chemical Manufacturing source category regulated under national emission 
standards for hazardous air pollutants (NESHAP). The U.S. Environm ental Protection Agency (EPA) 
is finalizing decisions concerning the RTR, including amendments pursuant to the technology review 
for equipment leaks and heat exchange systems, and also amendments pursuant to the risk review 
to specifically address ethylene  oxide emissions from storage tanks, process vents, and equipment 
leaks. In addition, we are taking final action to correct and clarify regulatory provisions related to 
emissions during periods of startup, shutdown, and malfunction (SSM), including removin g general 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1556/Add.2  
 
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  exemptions for periods of SSM, adding work practice standards for periods of SSM where 
appropriate, and clarifying regulatory provisions for certain vent control bypasses. The EPA is also 
taking final action to add monitoring and operational requ irements for flares that control ethylene 
oxide emissions and flares used to control emissions from processes that produce olefins and 
polyolefins; add provisions for electronic reporting of performance test results and other reports; 
and include other tec hnical corrections to improve consistency and clarity. We estimate that these 
final amendments will reduce hazardous air pollutants (HAP) emissions from this source category by 
approximately 107 tons per year (tpy) and reduce ethylene oxide emissions from this source 
category by approximately 0.76 tpy. We also estimate that these final amendments will reduce 
excess emissions of HAP from flares that control ethylene oxide emissions and flares used to control 
emissions from processes that produce olefins and polyolefins by an additional 263 tpy.  
DATES: This final rule is effective on 12 August 2020. The incorporation by reference (IBR) of certain 
publications listed in the rule is approved by the Director of the Federal Register as of 12 August 
2020.  
This fina l rule and previous actions notified under the symbol G/TBT/N/USA/1556  are identified by 
Docket Number EPA -HQ-OAR-2018-0746.   The Docket Folder is available on Regulations.gov  at 
https://www.regulations.gov/docket?D=EPA -HQ-OAR-2018-0746 and provides access to primary 
and suppo rting documents as well as comments received. Documents are also accessible from 
Regulations.gov  by searching the Docket Number.  
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