Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Maine; Redesignation of the Portland, ME and the Hancock, Knox, Lincoln and Waldo Counties, Maine 8-Hour Ozone Nonattainment Areas to Attainment for Ozone

Résumé

EPA is proposing to approve: A request to redesignate two 8- hour ozone National Ambient Air Quality Standard (NAAQS) nonattainment areas to attainment for the 8-hour ozone NAAQS; and a State Implementation Plan (SIP) revision containing a separate 10-year maintenance plan for each area. The two areas are the Portland, Maine 8-hour ozone nonattainment area and the Hancock, Knox, Lincoln and Waldo Counties (Midcoast), Maine 8-hour ozone nonattainment area. EPA is also providing information on the status of its transportation conformity adequacy determination for the new motor vehicle emissions budgets (MVEBs) for the year 2016 that are contained in the 10-year 8- hour ozone maintenance plans for each area. EPA is proposing to approve MVEBs for both areas.