Air Plan Approval; KY Infrastructure Requirements for the 2010 Nitrogen Dioxide National Ambient Air Quality Standard

The Environmental Protection Agency (EPA) is proposing to approve portions of the State Implementation Plan (SIP) submission, submitted by the Commonwealth of Kentucky, Energy and Environment Cabinet, Department for Environmental Protection, through the Kentucky Division for Air Quality (KDAQ), on April 26, 2013, to demonstrate that the Commonwealth meets the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2010 1-hour nitrogen dioxide (NO2) national ambient air quality standard (NAAQS). The CAA requires that each state adopt and submit a SIP for the implementation, maintenance and enforcement of each NAAQS promulgated by EPA, which is commonly referred to as an ``infrastructure'' SIP. KDAQ certified that the Kentucky SIP contains provisions that ensure the 2010 1-hour NO2 NAAQS is implemented, enforced, and maintained in Kentucky. EPA is proposing to determine that Kentucky's infrastructure submission, submitted on April 26, 2013, addresses certain infrastructure elements for the 2010 1-hour NO2 NAAQS.