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Regulatory Development and Retrospective Review Tracker

Fine Particulate Matter National Ambient Air Quality Standards: State Implementation Plan Requirements

a.k.a. Implementation Rule for 2012 PM2.5 NAAQS - SIP Requirements

RIN: 2060-AQ48 (What's this?)

Docket No.: Not yet available (What's this?)

Current Phase: Pre-Proposal (What's this?)

This proposed rule will address a range of implementation requirements for the 2012 National Ambient Air Quality Standards (NAAQS) for PM2.5.

The requirements expected to be addressed in this rule include the timing of State Implementation Plan submissions, the attainment deadlines for areas designated nonattainment, PM2.5 precursor policies, and requirements pertaining to attainment demonstrations, emission inventories, reasonably available control technology, reasonably available control measures, best available control measures, reasonable further progress, mid-course reviews, and contingency measures.

NPRM: Sent to OMB for Regulatory Review09/19/2014
NPRM: Received by OMB09/23/2014
NPRM: Regulatory Review Concluded02/27/2015
NPRM: Published in FR03/2015 (projected)

Potential Effects

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 present an opportunity to address an existing disproportionate impact on vulnerable populations.

State Governments
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

Code of Federal Regulations (CFR) Citation
40 CFR 57.100

Legal Authority
42 USC 7401


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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