California air quality rules will now be easier to read and enforce

The US environmental regulators are changing how California submits its air quality rules. This means the rules will be easier for the public to find and for regulators to check.

For decades, California's air quality rules were a mess of paper documents, making it hard for anyone to know what applied where. This change is part of a larger effort to digitize and standardize these rules. It means that local governments and businesses will have a clearer picture of their environmental obligations, and the US environmental regulators can enforce them more consistently.