On July 3, 2019, USEPA issued a proposed rule finding the Columbus, Ohio area is attaining the 2015 ozone National Ambient Air Quality Standard (NAAQS). The Columbus area is currently designated as nonattainment for the 2015 ozone NAAQS. However, in response to Ohio EPA’s request for redesignation to attainment supported by monitoring data for 2016-2018,… Continue Reading