National Association of Clean Air Agencies
EPARulemakingEPA-HQ-OAR-2015-0072

Review of the National Ambient Air Quality Standards for Particulate Matter

RIN
Last modified
Dec 19, 2024
Comment window
closed 1218d ago
National Association of Clean Air Agencies filings
2

Activity

National Association of Clean Air Agencies filed 2 comments on this docket between Dec 1, 2021 and Apr 3, 2023. 245 other organizations filed here. The comment window closed 1218d ago.

What National Association of Clean Air Agencies filed (2)

Apr 3, 2023· Comment submitted by National Association of Clean Air Agencies (NACAA)· EPA-HQ-OAR-2015-0072-2321

Filed on regulations.gov — full text not in the inline record.

Dec 1, 2021· Comment submitted by National Association of Clean Air Agencies (NACAA)· EPA-HQ-OAR-2015-0072-1338

Filed on regulations.gov — full text not in the inline record.

Abstract

Based on EPA’s reconsideration of the air quality criteria and the NAAQS for particulate matter (PM), the EPA proposes to revise the primary annual PM2.5 standard by lowering the level. The Agency proposes to retain the current primary 24-hour PM2.5 standard and the primary 24-hour PM10 standard. The Agency also proposes not to change the secondary 24-hour PM2.5 standard, secondary annual PM2.5 standard, and secondary 24-hour PM10 standard at this time. The EPA also proposes revisions to other key aspects related to the PM NAAQS, including revisions to the Air Quality Index and monitoring requirements for PM NAAQS.

View on regulations.gov →