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WASTEWATER COLLECTIONS (CLASS II) QUESTIONS AND ANSWERS 2025

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WASTEWATER COLLECTIONS (CLASS II) QUESTIONS AND ANSWERS 2025

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WASTEWATER LATEST
COLLECTIONS (CLASS
II)
ANSWER ALL QUESTIONS IN THIS SECTION



QUESTION 1



What is the MOST common factor leading to the generation of hydrogen sulfide in
sewers? - ANSWERS-Anaerobic conditions



QUESTION 2



When sewer line grades are too flat, an odor problem is likely to result.



The MOST likely cause of the odor problem is decreased velocity which... -
ANSWERS-Allows decomposable solids to settle



QUESTION 3



After a collection system problem has been solved, you should... - ANSWERS-
Evaluate the effectiveness of the results




END OF
PAGE
1

, WASTEWATER LATEST
COLLECTIONS (CLASS
II)
QUESTION 4



Why must you always know where a cleaning tool is in a sewer? - ANSWERS-So
you know where obstructions or difficulties are encountered



QUESTION 5



Improper connections can be detected through... - ANSWERS-TV inspections



QUESTION 6



When pouring a concrete slab, which of the following tools is used to compact the
concrete and bring a cement film to the surface for finishing?



Grasshopper?

Tamper?

Trowel?

Vibrator? - ANSWERS-Vibrator



END OF
PAGE
2

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