Alabama changes how it measures air pollution to match federal rules

Alabama has updated its air quality rules to use the same definition of "volatile organic compounds" as the US environmental regulators. This means the state will now measure certain air pollutants in the same way as the federal government.

States often have their own definitions for environmental pollutants, which can create confusion and make it harder to enforce rules consistently. When a state aligns its definitions with federal standards, it simplifies compliance for businesses operating across state lines. It also makes it easier for federal and state agencies to work together on air quality issues.