Development in Southeast Wisconsin Will Once Again be Hampered by Clean Air Rules

...But this time is different: there may not be a path forward to achieve attainment. Businesses and DNR agree that in-state emission reductions through permitting actions and controls on new and existing sources in the state will not be sufficient to meet the newly lowered federal standard. The standard is so low, and southeastern Wisconsin’s ozone is generated largely from air emissions migrating from Illinois, Indiana, and from cars and trucks – which together mean that the area cannot meet the federal standard without addressing those other emissions. And the DNR lacks the authority to regulate those sources...