Environmental Compliance Inspector Environmental Compliance Inspector Air Quality and Emissions Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a Continuous Emissions Monitoring System (CEMS) at a regulated facility?
- To provide real-time measurement of pollutant concentrations in stack emissions (Correct answer)
- To monitor ambient air quality in surrounding neighborhoods
- To track employee exposure to hazardous air pollutants
- To measure greenhouse gas emissions from mobile sources
Correct answer: To provide real-time measurement of pollutant concentrations in stack emissions
CEMS devices are installed directly on emission stacks to continuously measure pollutant concentrations such as SO2, NOx, and particulate matter in real time.
Question 2: Under the Clean Air Act, which permit program applies to major sources of air pollution that are newly constructed or significantly modified?
- New Source Review (NSR) (Correct answer)
- Title V Operating Permit
- General Conformity
- Risk Management Plan
Correct answer: New Source Review (NSR)
New Source Review is the preconstruction permitting program that requires major new or modified sources to obtain permits and install pollution controls before beginning operation.
Question 3: What does the term 'opacity' refer to in the context of air quality compliance inspections?
- The degree to which emissions reduce the transmission of visible light through a plume (Correct answer)
- The concentration of volatile organic compounds in ambient air
- The temperature differential between stack gases and ambient air
- The rate at which pollutants disperse from a point source
Correct answer: The degree to which emissions reduce the transmission of visible light through a plume
Opacity is a measure of how much visible light is blocked by emissions, typically assessed using EPA Method 9 visual observations or transmissometers.
Question 4: Which National Ambient Air Quality Standard (NAAQS) pollutant is most directly associated with ground-level ozone formation?
- Volatile Organic Compounds combined with nitrogen oxides (Correct answer)
- Carbon monoxide
- Lead
- Sulfur dioxide
Correct answer: Volatile Organic Compounds combined with nitrogen oxides
Ground-level ozone is not emitted directly but forms when VOCs and NOx react in the presence of sunlight, making both precursor pollutants critical to ozone NAAQS attainment.
Question 5: During a compliance inspection, an inspector discovers that a facility has been operating a baghouse with torn filter bags for three weeks. What type of violation does this most likely represent?
- A violation of the facility's operating permit conditions for particulate matter control (Correct answer)
- A reporting violation under the Emergency Planning and Community Right-to-Know Act
- A mobile source emission standard violation
- A violation of the facility's stormwater discharge permit
Correct answer: A violation of the facility's operating permit conditions for particulate matter control
A damaged baghouse operating with torn bags fails to meet the particulate matter control requirements specified in the facility's air quality operating permit.
Question 6: What is the maximum penalty per day of violation that the EPA can assess for Clean Air Act violations under current federal enforcement authority?
- Up to $121,275 per day per violation as adjusted for inflation (Correct answer)
- A flat $10,000 regardless of violation severity
- Up to $500,000 total for all violations combined
- No monetary penalty, only injunctive relief
Correct answer: Up to $121,275 per day per violation as adjusted for inflation
The EPA can assess civil penalties up to $121,275 per day per violation under the Clean Air Act, with amounts periodically adjusted for inflation under the Federal Civil Penalties Inflation Adjustment Act.
Environmental Compliance Inspector Environmental Compliance Inspector Air Quality and Emissions Questions and Answers 2
What is the primary purpose of a Continuous Emissions Monitoring System (CEMS) at a regulated facility?