AEP AEP Air Quality & Atmospheric Science 2

Question 1

Which greenhouse gas has the highest 100-year global warming potential (GWP) among common industrial gases?

Accepted Answer

Sulfur hexafluoride (SF6)

Answer

Sulfur hexafluoride (SF6) has a 100-year GWP of approximately 23,900, making it the most potent greenhouse gas regulated under common frameworks.

Question 2

What term describes the formation of a temperature inversion that traps air pollutants near the ground surface?

Accepted Answer

Subsidence inversion

Answer

A subsidence inversion occurs when descending air warms and creates a stable layer that traps pollutants below, commonly associated with high-pressure systems.

Question 3

Under the Clean Air Act, which program specifically regulates emissions of mercury, dioxins, and other toxic air pollutants from industrial sources?

Accepted Answer

NESHAP

Answer

National Emission Standards for Hazardous Air Pollutants (NESHAP) regulate emissions of 187 hazardous air pollutants (HAPs) from major and area source categories.

Question 4

What is the primary purpose of a Title V Operating Permit under the Clean Air Act?

Accepted Answer

Consolidate all applicable air requirements into a single permit

Answer

Title V operating permits consolidate all applicable Clean Air Act requirements into one document, providing a clear and enforceable record of a facility's air compliance obligations.

Question 5

Which Pasquill-Gifford stability class represents the most unstable atmospheric conditions?

Accepted Answer

Class A

Answer

Class A represents the most unstable atmospheric conditions, occurring under strong solar radiation and light winds, leading to vigorous vertical mixing and rapid pollutant dispersion.

AEP - Associate Environmental Professional Certification Practice Test

AEP - Associate Environmental Professional Certification Practice Test

AEP AEP Air Quality & Atmospheric Science 2