CES - Certified Environmental Scientist

What are the six criteria pollutants regulated under the National Ambient Air Quality Standards (NAAQS)?

Carbon monoxide, lead, nitrogen dioxide, ozone, particulate matter, and sulfur dioxide Methane, benzene, mercury, arsenic, radon, and asbestos Hydrogen sulfide, ammonia, chlorine, formaldehyde, toluene, and xylene Carbon dioxide, water vapor, nitrogen, oxygen, argon, and helium

Correct Answer:

Carbon monoxide, lead, nitrogen dioxide, ozone, particulate matter, and sulfur dioxide

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