Air Plan Approval; Montana; 2015 Ozone NAAQS Interstate Transport Requirements

Publication Date: 
Tuesday, April 12, 2022 - 4:00am

The Environmental Protection Agency (EPA) is approving a revision submitted by the State of Montana as meeting the Clean Air Act (CAA) requirement that each State Implementation Plan (SIP) contain adequate provisions to prohibit emissions that will significantly contribute to nonattainment or interfere with maintenance of the 2015 ozone National Ambient Air Quality Standards (NAAQS) in any other state. EPA is taking this action pursuant to the CAA.

Environmental Protection Agency