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Planning & Attainment >> Ozone Non-Attainment Areas

NCDAQ's comments on USEPA's January 6, 2010, proposed ozone standards NCDAQ Report on USEPA's Proposed Ozone Standards, March 25, 2010 8-Hour Ozone Nonattainment Boundary Recommendations (2008 Revised 8-Hour Ozone Standard, 0.075 ppm) Existing 8-hour Ozone Non-Attainment Areas in North Carolina (1997 8-Hour Ozone Standard, 0.08 ppm) NC 8-hour Ozone Design Values  EPA Ozone Non-Attainment Designations