Air Emission Monitoring & Control Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Air Emission Monitoring & Control flashcards as text
Which of the following describes the 'bubble concept' in air pollution control for existing sources?
Answer: Treating all emission points within a facility as a single source for compliance averaging purposes
The bubble concept allows a facility to treat all its emission stacks as one imaginary bubble, enabling emissions trading among units as long as total facility emissions stay within limits.
What does a CEMS 'daily calibration drift check' assess?
Answer: Whether the analyzer's response to zero and span gases has shifted since the last calibration
The daily calibration drift check introduces zero and span reference gases to determine if the analyzer's response has drifted, ensuring ongoing measurement accuracy between full calibrations.
An auditor discovers that a facility's Title V permit requires quarterly stack testing but only annual testing was conducted. This is an example of:
Answer: A monitoring deviation/violation that must be reported under the permit's deviation reporting requirements
Failure to conduct required monitoring at the specified frequency is a monitoring deviation, which must be reported to the permitting authority regardless of whether the emission measurements indicate compliance.
What is the primary difference between 'Best Available Control Technology' (BACT) and 'Lowest Achievable Emission Rate' (LAER)?
Answer: BACT applies in attainment areas and allows energy/economic consideration; LAER applies in nonattainment areas without cost consideration
BACT applies under PSD (attainment areas) and allows consideration of energy, economic, and environmental impacts; LAER applies in nonattainment NSR and requires the most stringent rate achievable without cost consideration.
Which parameter must be measured simultaneously with pollutant concentration when reporting emissions as a mass emission rate (lb/hr)?
Answer: Stack gas volumetric flow rate
Mass emission rate (lb/hr) is calculated by multiplying pollutant concentration (lb/dscf) by the stack gas volumetric flow rate (dscf/hr), so flow rate measurement is essential.
Under EPA's Risk Management Program (RMP) for stationary sources, a facility storing chlorine above threshold quantities must:
Answer: Develop and submit a Risk Management Plan including worst-case release scenario analysis
Facilities with regulated substances above threshold quantities under 40 CFR Part 68 must develop an RMP that includes hazard assessment, prevention program, and emergency response program.
A facility installs a new electrostatic precipitator and claims it qualifies as 'pollution control equipment' exempt from New Source Review. An auditor should verify that the project:
Answer: Does not increase the facility's potential to emit regulated pollutants above major source thresholds
The pollution control exemption from NSR requires that the project does not increase the source's potential to emit above major source thresholds; the auditor must confirm net emissions do not increase significantly.