Indiana can now use its own methods to track pollution from big industrial plants

US environmental regulators are letting Indiana change how it monitors nitrogen oxide pollution from large industrial facilities. This means Indiana can use its own monitoring, reporting, and record-keeping rules instead of federal ones, as long as they meet federal standards.

For years, states had to follow strict federal guidelines for tracking pollution, even if they had their own effective systems. This change allows Indiana to use methods it developed, which could make compliance easier for local industries. It also sets a precedent for other states to seek similar flexibility, potentially streamlining environmental oversight at the state level.