Approval and Promulgation of Implementation Plans; North Carolina; Nitrogen Dioxide and Sulfur Dioxide National Ambient Air Quality Standards Revisions

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan revision submitted by the State of North Carolina, through the North Carolina Department of Environment and Natural Resources on August 13, 2012, pertaining to definition changes for the Nitrogen Dioxide and Sulfur Dioxide National Ambient Air Quality Standards. EPA is approving this SIP revision because the State has demonstrated that it is consistent with the Clean Air Act. In the Final Rules section of this issue of the Federal Register, EPA is approving the State's implementation plan revision as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule.