Hazardous Air Pollutant

{
  "id": "MLC-T-ENV-012905",
  "term": "Hazardous Air Pollutant",
  "field": "Environment",
  "definition": "1. Air pollutants that are not covered by ambient air quality standards but which, as defined in the Clean Air Act, may present a threat of adverse human health effects or adverse environmental effects. Although classified as air pollutants, they may also impact drinkingwater.\n\n2. Any air pollutants listed in or pursuant to section 112(b) of the CAA. [40 CFR 63.6675 (CFR 2013)].\n\n3. Substance or mixture of substances listed as a hazardous air pollutant under section 112(b) of the Clean Air Act, as of April 12, 2001.\n\n4. Sum of all emissions of antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, and selenium as measured by EPA Method 29 (40 CFR part 60, appendix A) and with all nondetect data treated as one-half of the method detection limit.\n\n5. Chemical compounds listed in section 112(b) of the Clean Air Act (Act). All chemical compounds listed in section 112(b) of the Act need to be considered when making a major source determination. Only the HAP compounds listed in Table 1 of this subpart need to be considered when determining compliance. [40 CFR 63.1271 (CFR 2013)].\n\n6. Hazardous air pollutant(s). [40 CFR 63.1595 (CFR 2013)]\n\n7. Any hazardous air pollutant that appears in section 112(b) of the Clean Air Act.\n\n8. Hazardous air pollutant as defined from the list of 188 chemicals and compounds specified in the CAA Amendments of 1990; HAP are also called “air toxics.” The five plating and polishing metal HAP, as defined in this section, are on this list of 188 chemicals.\n\n9. Air pollutants that cause or may cause cancer or other serious health effects, such as reproductive effects or birth defects, or adverse environmental and ecological effects. Examples of toxic air pollutants include benzene (found in gasoline), perchloroethylene (emitted from some dry cleaning facilities), and methylene chloride (used as a solvent by a number of industries). Air toxics are also known as hazardous air pollutants.\n\n10. Toxic air pollutants, are those pollutants that are known or suspected to cause cancer or other serious health effects, such as reproductive effects or birth defects, or adverse environmental effects.\n\n11. Any air pollutant listed pursuant to section 112(b) of the Act.\n\n12. Another name for air toxic.\n\n13. Any substance or mixture of substances listed as a hazardous air pollutant under section 112(b) of the Clean Air Act.[85 FR 15608; National Emission Standards for Hazardous Air Pollutants: Solvent Extraction for Vegetable Oil Production Residual Risk and Technology Review]",
  "abbreviation": "HAP",
  "subject": "Air",
  "references": [
    "EPA Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources: Progress Report at http://www.epa.gov/hfstudy/pdfs/hf-report20121214.pdf",
    "40 CFR 63.782 (CFR 2013)",
    "40 CFR 63.2872 (CFR 2013)",
    "40 CFR 63.861 (CFR 2013)",
    "40 CFR 63.761 (CFR 2013)",
    "40 CFR 63.3310 (CFR 2013)",
    "40 CFR 63.9824 (CFR 2013)",
    "40 CFR 63.11511 (CFR 2013)",
    "Report on the Environment (ROE) Glossary",
    "School Siting Guidelines Glossary",
    "40 CFR 63.71 (CFR 2018)",
    "National Air Toxics Assessment (NATA) Glossary; AirToxScreen Glossary of Terms",
    "40 CFR 63.8698 (CFR 2020)"
  ],
  "url": "https://mlchart.com/terminology/environment/hazardous-air-pollutant/"
}