US environmental regulators fix numbering error in Arizona air quality plan
What happened
The US environmental regulators published a correction to a previous rule about air quality in Maricopa County, Arizona. This fixes numbering errors in the legal text, but does not change the substance of the rule.
Why it matters
This document is a technical correction. It does not change any actual rules or requirements for air quality. It simply ensures the legal text matches the intended regulation.
The signal
There is nothing to watch here; this is a clerical fix.