Marathon Petroleum air quality permit hearing ‘moot’ without cumulative impact calculation: Resident

Marathon Petroleum and MPLX seek permits to expand operations in Detroit’s 48217 zip code, which would increase emissions of ozone-forming pollutants and sulfur dioxide. State officials assert they must approve permits meeting health standards regardless of cumulative pollution impacts, while residents argue the process ignores their community’s existing industrial burden. Proposed legislation aims to require consideration of regional health impacts before issuing permits.