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See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Connecticut 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 New Source Review (NSR) and/or Prevention of Significant Deterioration (PSD) depending on the attainment status of the area where the source is located and the type and quantity of air pollutants emitted.
Connecticut currently has several counties that are in nonattainment with one or more of the National Ambient Air Quality Standards (NAAQS). The provisions of nonattainment NSR apply to new major sources or major modifications in those areas, while PSD requirements apply to attainment areas. Connecticut ...