Maintenance Area

{
  "id": "MLC-T-ENV-016296",
  "term": "Maintenance Area",
  "field": "Environment",
  "definition": "1. Area that was designated nonattainment for a specific NAAQS and was redesignated to attainment for that NAAQS subject to a maintenance plan as required by CAA section 175A.\n\n2. Any geographic region of the United States previously designated nonattainment pursuant to the CAA Amendments of 1990 and subsequently redesignated to attainment subject to the requirement to develop a maintenance plan under section 175A of the CAA, as amended.\n\n3. Area that was designated as nonattainment and has been re-designated in 40 CFR part 81 to attainment, meeting the provisions of section 107(d)(3)(E) of the Act and has a maintenance plan approved under section 175A of the Act.\n\n4. An area that was designated as nonattainment and has been re-designated in 40 CFR part 81 to attainment, meeting the provisions of section 107(d)(3)(E) of the Act and has a maintenance plan approved under section 175A of the Act.",
  "subject": "Air",
  "references": [
    "40 CFR 51.1100 (CFR 2018)",
    "40 CFR 93.101 (CFR 2018)",
    "40 CFR 93.152(CFR 2018)",
    "General Conformity Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/maintenance-area/"
}