CEM Air Quality Management & Monitoring 3

Question 1

Best Available Control Technology (BACT) is required for which type of source under the Clean Air Act?

Accepted Answer

Major new or modified sources in Prevention of Significant Deterioration (PSD) attainment areas

Answer

Minor new sources in nonattainment areas

Answer

All existing sources during annual permit renewals

Answer

Mobile sources exceeding emission thresholds

Question 2

How does Lowest Achievable Emission Rate (LAER) differ from Best Available Control Technology (BACT)?

Accepted Answer

LAER does not consider cost and applies to major sources in nonattainment areas

Answer

LAER is less stringent and applies only in attainment areas

Answer

LAER is established solely by state agencies without federal input

Answer

LAER applies only to mobile emission sources above threshold levels

Question 3

Which air pollution control device captures particulate matter by passing exhaust gases through porous fabric bags?

Accepted Answer

Baghouse filter

Answer

Wet scrubber

Answer

Electrostatic precipitator (ESP)

Answer

Catalytic oxidizer

Question 4

Selective Catalytic Reduction (SCR) is primarily installed to control which air pollutant?

Accepted Answer

Nitrogen oxides (NOₓ)

Answer

Sulfur dioxide (SO₂)

Answer

Carbon monoxide (CO)

Answer

Volatile organic compounds (VOCs)

Question 5

When calculating a facility's 'potential to emit' (PTE) for permitting purposes, which assumption is used?

Accepted Answer

Maximum emissions from all units operating at full design capacity for 8,760 hours per year without controls

Answer

Actual emissions averaged over the previous three years of operation

Answer

Emissions from only the largest single emission unit at the facility

Answer

Off-site emission reduction credits purchased by the facility

Question 6

Which types of greenhouse gases are covered under EPA's Mandatory Greenhouse Gas Reporting Rule (40 CFR Part 98) for large stationary sources?

Accepted Answer

Multiple GHGs including CO₂, CH₄, N₂O, and fluorinated gases

Answer

Carbon dioxide (CO₂) only

Answer

Methane (CH₄) from landfills and oil and gas facilities only

Answer

Carbon dioxide from combustion sources in the transportation sector only

Question 7

When preparing an air quality impact analysis using dispersion modeling for a proposed industrial facility, which factor is NOT a standard modeling input?

Accepted Answer

Facility real estate and property tax records

Answer

Stack height and exhaust gas velocity

Answer

Site meteorological data including wind speed and atmospheric stability class

Answer

Surrounding terrain elevation and local land use