The Environmental Protection Agency (EPA) is approving changes to State Implementation Plan (SIP) revisions submitted by the State of Georgia, through the Georgia Department of Natural Resources (GA DNR), Environmental Protection Division (GA EPD), in a letter dated April 30, 2021. The revisions remove obsolete references and provisions, clarify the State's inspection and maintenance (I/M) requirements, and update terminology, in part to reflect advances in test and vehicle technology.