Approval and Promulgation of Implementation Plans; Idaho: Infrastructure Requirements for the 2010 Nitrogen Dioxide and 2010 Sulfur Dioxide National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving the Idaho State Implementation Plan (SIP) as meeting the infrastructure requirements of the Clean Air Act (CAA) for the National Ambient Air Quality Standards (NAAQS) promulgated for nitrogen dioxide (NO<INF>2</INF>) on January 22, 2010, and sulfur dioxide (SO<INF>2</INF>) on June 2, 2010. Whenever a new or revised NAAQS is promulgated, the CAA requires states to submit a plan for the implementation, maintenance and enforcement of such NAAQS. The plan is required to address basic program elements, including but not limited to regulatory structure, monitoring, modeling, legal authority, and adequate resources necessary to implement, maintain and enforce the standards. These elements are referred to as infrastructure requirements.