Maryland joins lawsuit against EPA for failing to follow rules on airborne ‘fine particulate matter’

By: William J. Ford

Outlets: Maryland Matters

Published: April 25, 2026

Words: 858

Last Updated: 3 months ago


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Maryland joined 13 other jurisdictions that sued the Environmental Protection Agency Friday for its failure to meet a February deadline to determine which parts of the country are in compliance with a 2024 standard for “fine particulate matter.”

That lack of federal guidance affects the states’ ability to set local plans that would address unhealthy air in “nonattainment” areas, or those not meeting the air quality standards, the lawsuit says.

“Marylanders deserve clean air, and …

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