← National Parks Conservation Association
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 Parks Conservation Association filings
4

Activity

National Parks Conservation Association filed 4 comments on this docket between May 26, 2020 and Mar 6, 2023. 245 other organizations filed here. The comment window closed 1218d ago.

What National Parks Conservation Association filed (4)

Mar 6, 2023· Comment submitted by National Parks Conservation Association· EPA-HQ-OAR-2015-0072-1849

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

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Dec 16, 2021· Comment submitted by National Parks Conservation Association (NPCA) et al.· EPA-HQ-OAR-2015-0072-1531

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

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Jun 30, 2020· Comment submitted by Ulla Reeves, Senior Advocacy Manager, Clean Air Program, National Parks Conservation Association et al.· EPA-HQ-OAR-2015-0072-0760

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

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May 26, 2020· Comment submitted by Ulla Reeves, Senior Advocacy Manager, National Parks Conservation Association· EPA-HQ-OAR-2015-0072-0310

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

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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.

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Co-filers (245)

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