Adequacy Status of the Metro-East St. Louis, Illinois 2008 Ozone Standard Nonattainment Area for the Submitted Maintenance Plan for Transportation Conformity Purposes

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In this notice, the Environmental Protection Agency (EPA) is notifying the public that we find the motor vehicle emissions budgets (MVEBs) for volatile organic compounds (VOCs ) and oxides of nitrogen (NO X ) in the Illinois portion of the St. Louis area (Madison, Monroe and St. Clair Counties or "Metro-East area"), 2008 Ozone Standard nonattainment area adequate for use in transportation conformity determinations. Illinois submitted a 2008 Ozone Standard maintenance plan for the Metro-East area on May 8, 2017. As a result of this finding of adequacy, the MVEBs from the submitted maintenance plan must be used by state and Federal agencies in determining whether proposed transportation projects conform to the SIP as required by the Clean Air Act.