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Energy & environment · 06/04/2026Updated: 10/16/2026 · 1 min read

Determination of Attainment by the Attainment Date But for International Emissions for the 2015 Ozone National Ambient Air Quality Standards; Phoenix-Mesa Nonattainment Area, Arizona

Summary

The United States Environmental Protection Agency (EPA) has made a determination regarding the Phoenix-Mesa Nonattainment Area in Arizona for the 2015 Ozone National Ambient Air Quality Standards.

Original source language: Federal Register — Environmental Protection AgencyOpen original release →

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Energy & environment · 5/29/2026

Air Plan Approval; Michigan; Determination of Attainment by the Attainment Date for the 2015 Ozone Standards

The Environmental Protection Agency (EPA) is proposing to determine that the Detroit, Michigan nonattainment area attained the 2015 ozone National Ambient Air Quality Standards by the applicable attainment date, relying on an exceptional events request submitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on February 19, 2026.

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Energy & environment · 5/29/2026

EPA Approves Revisions to California Air Pollution Control Districts

The Environmental Protection Agency (EPA) has taken final action to approve revisions to the San Joaquin Valley Unified Air Pollution Control District, Ventura County Air Pollution Control District, and South Coast Air Quality Management District portions of the California State Implementation Plan, regulating emissions of volatile organic compounds from crude oil and natural gas production facilities.

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