New Source Review

{
  "id": "MLC-T-ENV-018568",
  "term": "New Source Review",
  "field": "Environment",
  "definition": "1. A Clean Air Act requirement that State Implementation Plans must include a permit review that applies to the construction and operation of new and modified stationary sources in nonattainment areas to ensure attainment of national ambient air quality standards.\n\n2. New major stationary sources of air pollution and major modifications to major stationary sources are required by the Clean Air Act to obtain an air pollution permit before commencing construction. This process is called new source review (NSR) and is required whether the major source or modification is planned for an area where the national ambient air quality standards (NAAQS) are exceeded (nonattainment areas) or an area where air quality is acceptable (attainment and unclassifiable areas). Permits for sources in attainment areas are referred to as prevention of significant air quality deterioration (PSD) permits; while permits for sources located in nonattainment areas are referred to as nonattainment (NAA) permits. The entire program, including both PSD and NAA permit reviews, is referred to as the NSR program.",
  "abbreviation": "NSR",
  "subject": "Air",
  "references": [
    "Terms of Environment",
    "Air Permitting Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/new-source-review/"
}