CEA Air Emission Monitoring & Control 4

Question 1

What is 'fugitive emissions' in the context of air quality regulation?

Accepted Answer

Air pollutants that escape from a process through means other than a stack, vent, or flue

Answer

Fugitive emissions are air pollutants that escape from equipment leaks, open surfaces, or unpaved roads rather than through designed emission points like stacks or vents.

Question 2

Which EPA regulation governs Leak Detection and Repair (LDAR) programs for equipment at petroleum refineries and chemical plants?

Accepted Answer

Both A and B depending on whether the source is new or existing

Answer

LDAR requirements appear under both NSPS (40 CFR Part 60) for new sources and NESHAP (40 CFR Part 63) for existing HAP-emitting sources, so both apply depending on source vintage.

Question 3

A facility uses a thermal oxidizer to control VOC emissions. What is the primary mechanism by which the device destroys VOCs?

Accepted Answer

Combustion of VOCs at elevated temperatures in the presence of oxygen

Answer

Thermal oxidizers destroy VOCs by combusting them at high temperatures (typically 1,400–1,800°F) in the presence of excess oxygen, converting them to CO2 and water.

Question 4

Under the EPA's Title V Operating Permit program, what is the significance of the 'major source' threshold of 100 tons/year?

Accepted Answer

Sources above this threshold must obtain a Title V permit and meet enhanced monitoring requirements

Answer

Stationary sources emitting 100 tons/year or more of any regulated pollutant (or lower thresholds in nonattainment areas) must obtain a comprehensive Title V operating permit with federally enforceable conditions.

Question 5

What is the purpose of performing a traverse-point sampling pattern (e.g., 12-point or 24-point grid) during a stack emissions test?

Accepted Answer

To account for non-uniform velocity and pollutant concentration profiles across the stack cross-section

Answer

Multi-point traverse sampling accounts for variations in gas velocity and pollutant concentration across the stack cross-section, producing a representative average emission measurement.

(CEA) Certified Environmental Auditor Practice Test

(CEA) Certified Environmental Auditor Practice Test

CEA Air Emission Monitoring & Control 4