Governing Law and Regulations
Delaware Department of Natural Resources and Environmental Control (DNREC) Division of Air Quality (DAQ)
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Delaware requires any new or modified source of air contaminants to secure an air quality permit to construct, unless specifically exempted. New major sources and major modifications must comply with the applicable provisions of Prevention of Significant Deterioration (PSD) and/or nonattainment New Source Review (NSR) depending on the pollutants emitted and the attainment status of the area in which the source is located and the type and quantity of air pollutants emitted.
Delaware currently has several counties that are in nonattainment with the National Ambient Air Quality Standards (NAAQS) for ozone. The provisions of nonattainment NSR apply to new major sources or major modifications in those areas, while PSD requirements apply to ...