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Arizona Chamber of Commerce and GOP Leaders Challenge EPA’s PM-2.5 Standard in Court

by Patrick Paul, Shawane Lee, and John Habib  In a move that could have significant implications for Arizona’s environmental policy and economy, the Arizona Chamber of Commerce and Republican leaders of the Arizona legislature have filed a lawsuit against the Environmental Protection Agency (EPA) over its new PM-2.5 standard. The petition for review, filed on […]

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USEPA Proposes New Particulate Matter Air Quality Standard

by Amanda Reeve The U.S. Environmental Protection Agency (USEPA) announced on January 6, 2023, that it is proposing to modify the National Ambient Air Quality Standard (NAAQS) for Fine Particulate Matter (PM2.5).  The current annual primary (health-based) NAAQS for PM2.5 is set at 12.0 micrograms per cubic meter of air (µg/m3); but it could soon […]

| 1 min read | Tagged: , , ,
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Environmental & Regulatory Policy Advisor