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See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Illinois requires a facility to apply for and obtain a construction permit before beginning construction of a new source or modifying an existing source. New major sources or modifications to existing major sources must comply with the applicable provisions of nonattainment NSR and/or PSD, depending on the attainment status of the area in which the source is located and the type and quantity of air pollutants emitted.
Illinois currently has several counties that are in nonattainment with one or more of the National Ambient Air Quality Standards (NAAQS). Therefore, the provisions of nonattainment NSR apply to new major sources or major modifications in those areas. Illinois administers a state implementation plan (SIP)-approved nonattainment NSR program. Therefore, the provisions of federal NSR and any amendments are not effective in Illinois until a SIP revision incorporating provisions at least as stringent as the federal requirements is submitted by the state and approved by the U.S. ...