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CWEA COLLECTIONS GRADE 2 EXAM NEWEST 2024-
2025 ACTUAL EXAM COMPLETE 80 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
The main reason for adding sodium hypochlorite to sewers is to
control: - ANSWER- Odor
Roots can enter collection systems through pipe cracks, true or false? - ANSWER- True
The lowest point on the inside of a pipeline is called the: -
ANSWER- Invert
How often must an excavation site and adjacent areas be inspected for hazardous conditions? - ANSWER- Daily
Working in an un-sloped trench with no shoring is one option of Protective Shoring Systems, true or false? - ANSWER- False.Some options are proper stopping or benching of the sides of the excavation, supporting the sides of a trench with shoring, and using a shield in the excavation area.
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Proper operation and maintenance of wastewater collection is keeping wastewater flowing through pipes, true or false? - ANSWER- True
Minimum design velocity for a sewer should greater than: -
ANSWER- 2 feet per second
Vitrified Clay pipe is a Rigid type of pipe, true or false? - ANSWER- True
Barrels, lids, cones, and backflow devices are all included in Manholes, true or false? - ANSWER- False. All are included except for backflow devices.
Sewer testing methods include air, water, mandrill, and sewage, true or false? - ANSWER- False. Sewer testing methods do not include sewage.
Using high velocity cleaners is one method included in hydraulic sewer cleaning, true or false? - ANSWER- True
A flow of 650 gpm would be how many MGD? - ANSWER- 650 gpm x (1440 min / 1 day) = 936000 gpd 936000 x (1 MG / 1000000 gal) = 0.936 MGD
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