1-Hour National Ambient Air Quality Standard Maintenance Area

{
  "id": "MLC-T-ENV-000027",
  "term": "1-Hour National Ambient Air Quality Standard Maintenance Area",
  "field": "Environment",
  "definition": "Area that was designated nonattainment for the 1-hour NAAQS on or after November 15, 1990 and was redesignated to attainment for the 1-hour NAAQS subject to a maintenance plan as required by section 175A of the CAA.",
  "references": [
    "40 CFR 51.900 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/1-hour-national-ambient-air-quality-standard-maintenance-area/"
}