West Virginia updates its air quality rules to match federal standards

West Virginia is updating its state air quality rules to match the national standards set by the US environmental regulators. This means the state will use the same methods to measure air pollution as the rest of the country.

States must enforce national air quality standards. But they can use different methods to measure pollution. West Virginia is now aligning its measurement methods with the federal ones. This makes it easier for the US environmental regulators to oversee the state's compliance.