Missouri can now regulate ammonia storage at farms, not the US environmental agency

The US environmental agency has given Missouri permission to manage its own rules for preventing accidental ammonia releases at agricultural facilities. This means Missouri's state environmental department will now oversee safety plans for these specific farm operations, instead of the federal government.

This shifts who is responsible for enforcing chemical safety at farms. For decades, the US environmental agency has set and enforced these rules. Now, Missouri's state agency will handle this specific type of facility, which could mean different enforcement priorities or standards for farmers in the state. This is a small example of a larger trend where states are taking on more regulatory power from federal agencies.