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The Environmental Protection Agency (EPA) has finalized a rule changing how it classifies the air quality in the St. Clair area of southeast Michigan. Specifically, this area was previously labeled as being in “nonattainment” for sulfur dioxide (SO2), meaning the air did not meet federal safety standards for that gas.

Why it matters: This is a primarily administrative action that updates the official record of air quality in the region. It confirms that local sulfur dioxide levels are low enough to meet federal standards and establishes the rules for keeping them that way.

Who it affects

  • DTE Energy (specifically regarding emissions limits at the Belle River Power Plant)

This information comes from a final rule published by the EPA; readers should consult the Federal Register for full technical details before relying on it.

Agency: Environmental Protection Agency
Source: Federal Register — read the official document

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