CEI Air Quality Management 2

Question 1

Which air sampling device separates collected particles into size fractions based on aerodynamic diameter?

Accepted Answer

Cascade impactor

Answer

A cascade impactor collects particles in successive stages at progressively higher velocities, separating them by aerodynamic diameter for size-resolved mass distribution analysis.

Question 2

What does PM10 specifically refer to in air quality monitoring?

Accepted Answer

Particulate matter with aerodynamic diameter of 10 micrometers or less

Answer

PM10 is inhalable particulate matter with an aerodynamic diameter ≤10 micrometers, which can penetrate into the upper airways and lungs.

Question 3

Which instrument is the EPA Federal Reference Method for continuous ambient ozone monitoring?

Accepted Answer

UV photometric analyzer

Answer

UV photometric analyzers measure ozone continuously by detecting its absorption of UV light at 254 nm and serve as EPA's Federal Reference Method for ambient ozone monitoring.

Question 4

What is the primary purpose of EPA-designated reference methods in air quality monitoring?

Accepted Answer

Provide the official benchmark for measuring a specific pollutant

Answer

EPA reference methods are the officially designated measurement procedures used to determine compliance with NAAQS and to validate other monitoring equipment and alternative methods.

Question 5

EPA Method 9 is used to measure which characteristic of stack emissions?

Accepted Answer

Visible emission opacity

Answer

EPA Method 9 is the visual determination of the opacity of emissions from stationary sources, requiring certified observers trained to estimate the percentage of light blocked by a visible plume.

CEI - Certified Environmental Inspector Practice Test

CEI - Certified Environmental Inspector Practice Test

CEI Air Quality Management 2