A Michigan county no longer has to cut sulfur dioxide pollution
What happened
US environmental regulators have declared that St. Clair County, Michigan, has met its sulfur dioxide reduction targets. This means the county no longer faces federal mandates to reduce this specific air pollutant.
Why it matters
Federal environmental rules require areas with high pollution to clean up their air by a specific date. If they succeed, the special rules and oversight go away. This decision means St. Clair County has officially exited that program for sulfur dioxide.
The signal
Watch for similar announcements in other areas that were previously designated as 'nonattainment' for sulfur dioxide.