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Regulatory Development and Retrospective Review Tracker

Interstate Transport Rule for the 2008 Ozone NAAQS

a.k.a. Interstate Transport Rule for the 2008 Ozone NAAQS

RIN: 2060-AS05 (What's this?)

Docket No.: EPA-HQ-OAR-2015-0500 (What's this?)

Current Phase: Proposal (What's this?)

This proposed rule would address Clean Air Act requirements concerning the transport of air pollution across state boundaries. It is the next step for the EPA to move forward with the states to address interstate transport with respect to the 2008 ozone National Ambient Air Quality Standards. This action will not address the particulate matter National Ambient Air Quality Standards.


NPRM: Sent to OMB for Regulatory Review09/29/2015
NPRM: Received by OMB09/29/2015
NPRM: Regulatory Review Concluded11/15/2015
NPRM: Comment Period Open12/03/2015
NPRM: Published in FR12/03/2015
NPRM: Public Meeting12/17/2015
NPRM: Comment Period Extension Published in FR12/29/2015
NPRM: Comment Period Closed01/19/2016
NPRM: Comment Period Closed with Extension02/01/2016
Final Rule: Published in FR09/2016 (projected)

Potential Effects

Children's Health
This rule is likely to address an adverse impact on childhood lifestages, including prenatal (via exposure to women of childbearing age). The potential adverse impacts are expected to be due to exposure (i.e., children and/or women of childbearing age are more likely to be highly exposed than other lifestages).

Environmental Justice
This rulemaking involves a topic that is likely to be of particular interest to or have particular impact upon minority, low-income, tribal, and/or other vulnerable populations because:

  • This topic is likely to impact the health of vulnerable populations.

Federal Government - other agencies
Likely to be involved in the implementation of this rule.

Participate / Learn More Regulatory Review

Some of EPA's rulemakings undergo regulatory review (What's this?), as prescribed by Executive Order 12866 and coordinated by the Office of Management and Budget (OMB). The following list describes which of this rulemaking's stages have completed review and published in the Federal Register, if any, and provides links to the review documents where available. Consult the "Timeline" section of this Web page for the dates of each review.

  • NPRM - This stage of the rulemaking underwent review.
Citations & Authorities

Federal Register Citations

Code of Federal Regulations (CFR) Citation
40 CFR Part 51

Legal Authority
42 U.S.C. 7401 et seq. Clean Air Act


This site provides summaries of priority rulemakings and priority retrospective reviews of existing regulations. We update most of the site at the beginning of each month, though some data is updated more frequently if it is time sensitive. The information on this site is not intended to and does not commit EPA to specific conclusions or actions. For example, after further analysis, EPA may decide the effects of a rule would be different or it may decide to terminate a rulemaking.

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