INSPECTOR EXAM PREP TEST BANK
UPDATED QUESTIONS AND SOLUTIONS
2026
◉ What is the danger of asphyxiation set point for oxygen on an
atmospheric monitor?
Answer: 19.5%
◉ Whenever an inpector or sampling tech is in a manhole, how
many people should there be above to respond in the event of an
emergency?
Answer: 2
◉ Hydrogen Sulfide gas smells like:
Answer: rotten eggs
◉ How many areas of traffic control are there?
Answer: 5
◉ The different areas of traffic control include:
, Answer: Buffer
◉ What type of weir is best for low flow conditions? V notch or
flume?
Answer: V notch
◉ If the flow downstream rises such that a Parshall Flume is
submerged, does the flow through the flume increase or decrease?
Answer: decrease
◉ What are the four types of hazardous waste?
Answer: Flammable, Toxic, Reactive, Corrosive
◉ What does method 624 measure?
Answer: volatile organics
◉ What does metod 625 measure?
Answer: semi volatile organics
◉ How often should IU's be sampled by the POTW?
Answer: Once a year