Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; State of Louisiana; Approval of the Maintenance Plans for the Parishes of Beauregard, Grant, Lafayette, Lafourche, and St. Mary; Redesignation of these Ozone Nonattainment Areas to Attainment

On March 27, 1995, December 12, 1994, October 21, 1994, November 18, 1994, and November 23, 1994, the State of Louisiana submitted revised maintenance plans and requests to redesignate the ozone nonattainment areas of Beauregard, Grant, Lafayette, Lafourche, and St. Mary Parishes to attainment. These maintenance plans and redesignation requests were initially submitted to the EPA during the Summer of 1993. Although the EPA deemed these initial submittals complete, certain approvability issues existed. The State of Louisiana addressed these approvability issues and has revised its submissions. Under the Clean Air Act (CAA), nonattainment areas may be redesignated to attainment if sufficient data are available to warrant the redesignation and the area meets the other CAA redesignation requirements. In this action, EPA is approving Louisiana's redesignation requests because they meet the maintenance plan and redesignation requirements set forth in the CAA and EPA is approving the 1990 base year emissions inventory. The approved maintenance plans will become a federally enforceable part of the State Implementation Plan (SIP) for Louisiana.