Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Arizona; Correction of Redesignation of Phoenix to Attainment for the Carbon Monoxide Standard

In today's action, EPA is taking direct final action to amend the regulations that identify revisions to the Arizona state implementation plan and the regulations that identify area designations within Arizona. In so doing, EPA is acting pursuant to the Agency's authority under the Clean Air Act to correct errors made in approving plan revisions and area redesignations. The purpose of this action is to correct an error in the adoption and submittal date shown for a revision to the implementation plan that EPA recently approved and to correct a transcription error in, and to make a more general correction to, the boundary description of the metropolitan Phoenix carbon monoxide area that EPA recently redesignated to attainment.