US environmental regulators reject North Carolina's plan to clean up regional haze
What happened
US environmental regulators have partially approved and partially rejected North Carolina's plan to reduce regional haze. This means North Carolina must now submit a new plan to address the parts the regulators found insufficient, or face federal intervention.
Why it matters
States are required to make steady progress toward cleaning up regional haze, which affects visibility in national parks and wilderness areas. When a state's plan is rejected, it signals that the proposed measures are not strong enough to meet federal standards. This forces the state to either strengthen its environmental protections or risk having the US environmental regulators impose a federal plan.
The signal
Watch for North Carolina's revised plan and whether it includes stronger emissions controls for industrial sources, or if the US environmental regulators step in with their own plan.