Particulate matter 10

{
  "id": "MLC-T-ENV-020303",
  "term": "Particulate matter 10",
  "field": "Environment",
  "term_source": "Particulate Matter 10",
  "definition": "1. PM 10 is measure of particles in the atmosphere with a diameter of less than ten or equal to a nominal 10 micrometers. PM-2.5 is a measure of smaller particles in the air. PM-10 has been the pollutant particulate level standard against which EPA has been measuring Clean Air Act compliance. On the basis... of newer scientific findings, the Agency is considering regulations that will make PM-2.5 the new \"standard\".\n\n2. Particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers as measured by a reference method based on appendix J of part 50 of this chapter and designated in accordance with this part or by an equivalent method designated in accordance with this part.\n\n3. Particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers as measured by a reference method based on appendix J of part 50 of this chapter and designated in accordance with part 53 of this chapter or by an equivalent method designated in accordance with part 53 of this chapter.\n\n4. Particulate matter with an aerodynamic diameter less than or equal to 10 micrometers.",
  "subject": "Chemical substances",
  "references": [
    "Terms of Environment",
    "40 CFR 53.1 (CFR 2013)",
    "40 CFR 58.1 (CFR 2013)",
    "40 CFR 49.123 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/particulate-matter-10/"
}