Level I concentrations for the air migration pathway

{
  "id": "MLC-T-ENV-015649",
  "term": "Level I concentrations for the air migration pathway",
  "field": "Environment",
  "term_source": "Level I Concentrations for the Air Migration Pathway",
  "definition": "Level I concentrations are established at sampling locations where the concentration of at least one hazardous substance that meets the criteria for an observed release is at or above its health - based benchmark for air. Level I concentrations also may be established if multiple hazardous substances are present below their respective benchmarks, but the I or J index is greater than or equal to one. Benchmarks for air include National Ambient Air Quality Standards (NAAQs), National Emission Standards for Hazardous Air Pollutants (NESHAPs), screening concentrations for cancer, and screening concentrations for noncancer toxicological responses.",
  "subject": "Health and safety",
  "references": [
    "Hazard Ranking System Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/level-i-concentrations-for-the-air-migration-pathway/"
}