EPA set to publish revised ozone designations

EPA is moving to expand some areas of the country deemed in “nonattainment” with federal ozone standards, and propose an expansion of others, starting periods for litigation and public comment, according to two notices published in the Federal Register June 14. In the first decision , EPA will enlarge areas in nonattainment with the agency’s 2015 national ambient air quality standards (NAAQS) of 70 parts per billion (ppb) to include outlying areas of existing nonattainment zones. Areas in nonattainment...