ML21141A341

Advanced Reactors GEIS Docs - EPA - Naaqs Designations Process

ML21141A341
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Issue date:	05/21/2021
From:	NRC
To:	NRC/NMSS/DREFS
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From: Dozier, Tami Sent: Friday, May 21, 2021 10:30 PM To: AdvancedReactors-GEISDocsPEm Resource

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EPA - NAAQS Designations Process Attachments: EPA 2020 NAAQS Designations.pdf

NAAQS Designations Process l Criteria Air Pollutants l US EPA An official website of the United States government.

United States Environmental Protection Menu Agency Search EPA.gov Related Topics: Criteria Air Pollutants CONTACT US SHARE NAAQS Designations Process After EPA sets a new National Ambient Air Quality Standard or revises an existing standard for each criteria air pollutant, the Clean Process of Setting and Implementing Air Act requires EPA to determine if areas the country meet the NAAQS new standards.

States and tribes submit recommendations to the EPA as to Standards - setting, reviewing, and whether or not an area is attaining the national ambient air quality revising the standards for a criteria pollutant. The states and tribes base these standards recommendations on air quality data collected from monitors at Designations -

locations in urban and rural settings as well as other information determining whether characterizing air quality such as modeling. After working with the areas meet the states and tribes and considering the information from air quality standards monitors, and/or models, EPA will "designate" an area as Implementation -

attainment or nonattainment for the standard. attaining and maintaining the If the air quality in a geographic area meets or is cleaner than the standards national standard, it is called an attainment area (designated unclassifiable/attainment); areas that don't meet the national standard are called nonattainment areas. In some cases, EPA is not able to determine an area's status after evaluating the available information. Those areas are designated "unclassifiable."

Once designations take effect, state and local governments must develop implementation plans outlining how areas will attain and maintain the standards by reducing air pollutant emissions. Tribes may elect to develop tribal implementation plans but are not required to do so.

Contact Us to ask a question, provide feedback, or report a problem.

https://www.epa.gov/criteria-air-pollutants/naaqs-designations-process[11/23/2020 10:35:43 AM]

NAAQS Designations Process l Criteria Air Pollutants l US EPA Discover. Connect. Ask.

Accessibility Data.gov Contact EPA EPA Administrator Inspector General Hotlines Budget & Performance Jobs FOIA Requests Contracting Newsroom Frequent Questions Grants Open Government January 19, 2017 Web Regulations.gov Follow.

Snapshot Subscribe No FEAR Act Data USA.gov Privacy LAST UPDATED ON FEBRUARY 19, White House 2020 Privacy and Security Notice https://www.epa.gov/criteria-air-pollutants/naaqs-designations-process[11/23/2020 10:35:43 AM]