EPA is approving revisions to the Minnesota State Implementation Plan (SIP) for ozone and particulate matter (PM) which address the "good neighbor" provisions of the Clean Air Act (CAA). These provisions require each state to submit a SIP that prohibits emissions that adversely affect another state's air quality. The Minnesota Pollution Control Agency (MPCA) has adequately addressed the four distinct elements related to the impact of interstate transport of air pollutants. These include prohibiting significant contribution to nonattainment of the National Ambient Air Quality Standards (NAAQS) in another state, interference with maintenance of the NAAQS in another state, interference with plans in another state to prevent significant deterioration of air quality, and interference with plans in another state to protect visibility.