August 11, 2026

Between a Rock and a Hard Place: The EPA Rule on Ozone Levels and the Intermountain West

December 12, 2014 by

The EPA Rule on Ozone Levels Recently, the US Environmental Protection Agency (the “EPA”) published an administrative rule that requires states to lower atmospheric ozone levels to 60-70 parts per billion. For states in the Intermountain West, where the level of naturally occurring ozone (or “background concentrations”) routinely reaches 60 – 75 ppb, it’s going to be tough to […]

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