CEM Air Quality Management & Monitoring 2

Question 1

Which measurement approach is used in the EPA Federal Reference Method (FRM) for ambient PM2.5 monitoring?

Accepted Answer

Gravimetric filter-based sampling

Answer

The EPA FRM for PM2.5 uses gravimetric filter-based samplers that physically collect particles on a pre-weighed filter, which is then re-weighed to determine mass concentration.

Question 2

Which EPA-approved method is primarily used to measure total particulate matter (filterable) emissions from a stationary source stack?

Accepted Answer

EPA Method 5 (particulate matter)

Answer

EPA Method 5 is the reference method for determining total particulate matter emissions from stationary sources by isokinetic sampling and gravimetric analysis.

Question 3

Continuous Emission Monitoring Systems (CEMS) are most commonly required for facilities subject to which Clean Air Act program?

Accepted Answer

Acid Rain Program (Title IV) and other major source requirements

Answer

CEMS are mandated for major sources under programs such as the Acid Rain Program (Title IV) and certain Title V requirements to provide continuous, real-time emission data.

Question 4

Which EPA-preferred regulatory dispersion model is used to estimate ground-level pollutant concentrations from stationary sources?

Accepted Answer

AERMOD

Answer

AERMOD is the EPA's preferred steady-state atmospheric dispersion model for regulatory air quality impact assessments from stationary sources, incorporating modern planetary boundary layer concepts.

Question 5

The 'bubble concept' in air quality regulation allows a facility to:

Accepted Answer

Average emissions across multiple emission points within a facility to meet an overall emission limit

Answer

The bubble concept treats all emission units at a facility as if they were enclosed in a single 'bubble,' allowing emissions trading among units as long as the total facility emissions meet the aggregate limit.

CEM - Certified Environmental Manager Practice Test

CEM - Certified Environmental Manager Practice Test

CEM Air Quality Management & Monitoring 2