The Environmental Protection Agency (EPA) is approving a submittal from the State of Wyoming that demonstrates that the Wyoming State Implementation Plan (SIP) meets certain interstate transport requirements of the Clean Air Act (Act or CAA) for the 2008 ozone National Ambient Air Quality Standards (NAAQS). Specifically, the submittal meets the requirement that Wyoming's SIP contain adequate provisions to prohibit emissions in amounts which will interfere with maintenance of the 2008 ozone NAAQS in any other state. The EPA is taking this action pursuant to section 110 of the Clean Air Act (CAA).