Regulation & law · 17/10/2006Updated: 10/17/2026 · 1 min read

EPA Proposes Approval of Maine Ozone Nonattainment Areas Redesignation and 10-Year Maintenance Plans

The Environmental Protection Agency (EPA) is proposing to approve redesignation of two 8-hour ozone nonattainment areas in Maine to attainment for the 8-hour ozone National Ambient Air Quality Standard (NAAQS). The areas include Portland, ME, and the Hancock, Knox, Lincoln, and Waldo Counties, also known as the Midcoast region.