EPA’s PM NAAQS Plan Requires Equity Focus, But Few New Air Monitors

January 30, 2023
EPA’s proposal to tighten national ambient air quality standards (NAAQS) for fine particulate matter (PM2.5) will require states to relocate some air quality monitors to satisfy a new environmental justice (EJ) focus, and floats technical improvements to such equipment, but will not require any significant expansion of the air monitoring network. The proposal , unveiled Jan. 6 and published in the Federal Register Jan. 27, floats several changes in air monitoring to accommodate any tougher standards. EPA clarifies that...

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