Prevention of significant deterioration

{
  "id": "MLC-T-ENV-022052",
  "term": "Prevention of significant deterioration",
  "field": "Environment",
  "term_source": "Prevention of Significant Deterioration",
  "definition": "1. Prevention of Significant Deterioration is a construction air pollution permitting program designed to ensure that air quality does not degrade beyond the NAAQS levels or beyond specified incremental amounts above a prescribed baseline level.\n\n2. EPA program in which state and/or federal permits are required in order to restrict emissions from new or modified sources in places where air quality already meets or exceeds primary and secondary ambient air quality standards.",
  "abbreviation": "PSD",
  "subject": "Air",
  "references": [
    "Air Permitting Terms",
    "Terms of Environment"
  ],
  "url": "https://mlchart.com/terminology/environment/prevention-of-significant-deterioration/"
}