G/TBT/N/USA/1224  
 
24 November 2016  
(16-6444) Page: 1/2 
Committee o n Technical Barriers to Trade  Original : English  
 
  NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member : UNITED STATES OF AME RICA  
If applicable, name of local government involved  (Article 3.2 and 7.2) : 
2. Agency responsible : Environmental Protec tion Agency (EPA) [1241]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification  shall be indicated if different from above : 
Please su bmit comments to : USA WTO TBT Enquiry Point  
Email : usatbtep@nist.gov   
3. Notified under Article 2.9.2 [  ], 2.10.1 [  ], 5.6.2 [  ], 5.7.1 [  ], other : X 
4. Products covered (HS or CCCN where applicable, otherwise national tariff heading. 
ICS numbers may be provided in addition, where applicable) : Continuous opacity 
monitoring . Air quality (ICS : 13.040)  
5. Title, number of pages  and language(s)  of the notified document : Approval and 
Promulgation of Air Quality Impleme ntation Plans; Maryland; Revisions and Amendments to 
Regulations for Continuous  
Opacity Monitoring, Continuous Emissions Monitoring, and Quality Assurance Requirements 
for Continuous Opacity Monitors (5 pages, in English)  
6. Description of content : The E nvironmental Protection Agency (EPA) is approving a state 
implementation plan (SIP) revision submitted by the State of Maryland. The revision 
pertains to changes and amendments to Maryland regulations for continuous opacity 
monitoring (COM or COMs) and con tinuous emissions monitoring (CEM or CEMs) and to an 
amendment adding requirements for Quality Assurance and Quality Control (QA/QC) as 
they pertain to COMs. EPA is approving these revisions to the COMs and CEMs 
requirements in accordance with the requirem ents of the Clean Air Act (CAA).  
7. Objective and rationale , including the nature of urgent problems where 
applicable : Protection of the environment  
8. Relevant documents : 
 81 Federal Register (FR) 78048, 7 November 2016; Title 40 Code of Federal 
Regulati ons (CFR) Part 52.  
 Approval and Promulgation of Air Quality Implementation Plans; Maryland;  
Revisions and Amendments to Regulations for Continuous Opacity  
Monitoring, Continuous Emissions Monitoring, and Quality Assurance  
Requirements for Continuous Opa city Monitors, Proposed Rule was published 
17 June 2016: https://www.gpo.gov/fdsys/pkg/FR -2016-06-17/html/2016 -
14394.htm  https://www.gpo.gov/fdsys/pkg/FR -2016-06-17/pdf/2016 -14394.pdf  
 EPA Technical Support Document  – Revisions and Amendments to Continuous 
Opacity Monitoring (COM) and Continuous Emissions Monitoring (CEM) Requirements G/TBT/N/USA/1224  
 
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  in COMAR 26.11.01  and Addition of Quality Assurance Requireme nts for COMs in 
COMAR 26.11.31 : https://www.regulations.gov/contentStreamer? documentId=EPA -
R03-OAR-2016-0042-0004&disposition=attachment&contentType=pdf   
9. Proposed date of adoption : 7 December 2016  
Proposed date of entry into force : 7 December 2016   
10. Final date for comments : None 
11. Texts available from : National enquiry  point  [ ] or address, telephone and fax 
number s and e mail and website address es, if available , of other body :  
https://members.wto.org/crnattachments/2016/TBT/USA/16_4800_ 00_e.pdf