National Emission Standards for Hazardous Air Pollutants (NESHAP) regulate emissions of which substances?

National Emission Standards for Hazardous Air Pollutants (NESHAP) regulate emissions of which substances?

• A. Asbestos, arsenic, benzene, mercury, radionuclides, beryllium, vinyl chloride, coke oven emissions
• B. Carbon dioxide, methane, nitrous oxide
• C. Lead, cadmium, mercury, arsenic
• D. Arsenic, lead, mercury, chromium

Answer: (A)

Hazardous air pollutants are the focus of NESHAP, emission standards under the Clean Air Act designed to control toxic pollutants that pose serious health risks. These standards cover a broad and diverse group of substances, not just a few chemicals, across many industries. The best choice lists a representative mix of these pollutants—asbestos, arsenic, benzene, mercury, radionuclides, beryllium, vinyl chloride, and coke oven emissions—illustrating the wide range of materials NESHAP targets, from metals and organic compounds to radioactive materials. Greenhouse gases like carbon dioxide, methane, and nitrous oxide are regulated under different programs and frameworks, not NESHAP. The other options name subsets of hazardous air pollutants but don’t capture the broad scope of what NESHAP covers.

Hazardous air pollutants are the focus of NESHAP, emission standards under the Clean Air Act designed to control toxic pollutants that pose serious health risks. These standards cover a broad and diverse group of substances, not just a few chemicals, across many industries. The best choice lists a representative mix of these pollutants—asbestos, arsenic, benzene, mercury, radionuclides, beryllium, vinyl chloride, and coke oven emissions—illustrating the wide range of materials NESHAP targets, from metals and organic compounds to radioactive materials.

Greenhouse gases like carbon dioxide, methane, and nitrous oxide are regulated under different programs and frameworks, not NESHAP. The other options name subsets of hazardous air pollutants but don’t capture the broad scope of what NESHAP covers.