American Iron and Steel Institute
EPARulemakingEPA-HQ-OAR-2015-0072

Review of the National Ambient Air Quality Standards for Particulate Matter

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Last modified
Dec 19, 2024
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closed 1218d ago
American Iron and Steel Institute filings
2

Activity

American Iron and Steel Institute filed 2 comments on this docket between Feb 15, 2023 and Apr 3, 2023. 245 other organizations filed here. The comment window closed 1218d ago.

What American Iron and Steel Institute filed (2)

Apr 3, 2023· Comment submitted by American Iron and Steel Institute (AISI)· EPA-HQ-OAR-2015-0072-2214

American Iron and Steel Institute comments respectfully submitted on PM NAAQS Proposal.

Feb 15, 2023· Comment submitted by American Iron and Steel Institute (AISI)· EPA-HQ-OAR-2015-0072-1749

Comment Period Extension Request Letter from AISI

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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