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EPA/OAR RIN: 2060-AS71 Publication ID: Fall 2016 
Title: Revision to the Near-Road NO2 Monitoring Requirements 
Abstract:

This action will remove the existing network design requirement to install near-road NO2 monitoring stations in Core Based Statistical Areas (CBSAs) having populations between 500,000 and 1,000,000 persons, due by January 1, 2017. The EPA is finalizing this action based on a review of research data and routine NO2 monitor data generated by existing near-road NO2 sites that were established in larger CBSAs beginning in 2012. The data from these near-road NO2 sites, the majority of which are located in higher populated CBSAs having 1,000,000 or more persons, indicate that the current NO2 air quality concentrations in the near-road environment are generally well below both the annual and 1-hour daily maximum NAAQS levels of 53 ppb and 100 ppb, respectively. Due to the correspondence between population, traffic, and expected NO2 concentrations in the near-road environment, it is anticipated that measured near-road NO2 concentrations in relatively smaller CBSAs (e.g., CBSAs with populations less than 1,000,000 persons) would typically exhibit similar, if not lower, concentrations than what is being seen in larger urban areas. Therefore, this action will reduce additional burden on state and local air monitoring agencies by removing monitoring requirements in locations where measured NO2 air quality is expected to be well below the NAAQS. This action does not address the existing requirements for near-road NO2 monitoring in CBSAs having 1,000,000 or more persons.

 
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: No 
EO 13771 Designation: uncollected 
CFR Citation: 40 CFR 58   
Legal Authority: 42 U.S.C. 7403    42 U.S.C. 7410    42 U.S.C. 7601    42 U.S.C. 7619 Clean Air Act   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  05/16/2016  81 FR 30224   
NPRM Comment Period End  06/30/2016 
Final Rule  12/00/2016 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Local, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Nealson Watkins
Environmental Protection Agency
Office of Air and Radiation
C304-06,
Research Triangle Park, NC 27711
Phone:919 541-5522
Fax:919 541-1903
Email: watkins.nealson@epa.gov