Wisconsin; Approval/Disapproval of Interstate Transport Requirements for the 2008 Ozone NAAQS

The Environmental Protection Agency (EPA) is partially approving and partially disapproving elements of State Implementation Plan (SIP) submission from Wisconsin regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2008 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA. This action pertains specifically to infrastructure requirements concerning interstate transport provisions for which Wisconsin made a SIP submission that, among other things, certified that the existing SIP was sufficient to meet the interstate transport requirements for the 2008 ozone NAAQS.