Regulation & law · 12/11/2019Updated: 10/17/2026 · 1 min read

EPA Finalizes Determination of Attainment for Phoenix-Mesa Ozone Nonattainment Area

The Environmental Protection Agency (EPA) has confirmed that the Phoenix-Mesa area met the 2008 ozone National Ambient Air Quality Standards by July 20, 2018, based on quality-assured data from 2015-2017, fulfilling its statutory obligation to determine attainment.

Original source language: Federal Register — All DocumentsOpen original release →

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