CWEA Collections System Maintenance Grade 3 |
Questions And Answers Graded A+ Latest 2026 | Instant
Pdf Download
Which of the following is the most common factor leading to the generation of hydrogen
sulfide in sewers?
a. Anaerobic conditions.
b. Constantly high velocity of flow in sewers.
c. Low concentrations of ferrous sulfide.
d. Presence of highly soluble fats and oils. SELECTED ANSWER 👀 a. Anaerobic
conditions.
A category 2 SSO is:
a. any SSO which does not reach surface waters.
b. not reportable.
c. preventable.
d. any SSO which is not category 1. SELECTED ANSWER 👀 d. any SSO which is not
category 1.
Which tool would you use for cleaning under a pipe, or hard dirt near a pipe?
a. Miner's pick.
b. Wrench.
c. Drill.
d. Hammer. SELECTED ANSWER 👀 a. Miner's pick.
A torque wrench is used to tighten which device?
,a. Pipe clamp.
b. Drill chuck.
c. Light bulb.
d. Sheet metal screw SELECTED ANSWER 👀 a. Pipe clamp.
Which unit uses high water pressure and a vacuum to clean sewer lines?
a. Jetter
b. Mechanical rodder
c. Combination unit
d. Bucket machine SELECTED ANSWER 👀 c. Combination unit
In sewer maintenance, what is a pig?
a. A ball forced through a sewer line.
b. A power rod.
c. Any foul smelling equipment.
d. The hydraulic rodding truck. SELECTED ANSWER 👀 a. A ball forced through a sewer
line.
When pouring a concrete slab, which of the following tools is used to finish the concrete?
a. Grasshopper.
b. Tamper.
c. Trowel.
d. Vibrator. SELECTED ANSWER 👀 c. Trowel.
What tool is used to snare a broken section of sewer rod?
, a. Square stock corkscrew.
b. Auger.
c. Pickup tool.
d. Pull out tool. SELECTED ANSWER 👀 c. Pickup tool.
Why is the replacement of wastewater collection systems in some downtown streets
difficult?
a. Crowding of other underground utilities.
b. Records have not been maintained properly and the collection system is lost.
c. Some people have landscaped their backyards over the collection system and do not
want their yards dug up.
d. The streets will have to be paved again SELECTED ANSWER 👀 a. Crowding of other
underground utilities.
How can the velocity of water flowing in a sewer be estimated?
a. Driving between manholes and reading the speedometer.
b. Measuring the Manning's roughness coefficient for the sewer.
c. Measuring the time it takes for the dye to be carried by the wastewater between the two
manholes.
d. Measuring the time it takes to run between the two manholes. SELECTED ANSWER 👀
c. Measuring the time it takes for the dye to be carried by the wastewater between the two
manholes.
Drawings which are considered "As Built" would be?
a. Construction drawings issued to the contractor.
b. Corrected construction drawings showing changes made in the field installation.
c. Detailed drawings of proposed construction.
Questions And Answers Graded A+ Latest 2026 | Instant
Pdf Download
Which of the following is the most common factor leading to the generation of hydrogen
sulfide in sewers?
a. Anaerobic conditions.
b. Constantly high velocity of flow in sewers.
c. Low concentrations of ferrous sulfide.
d. Presence of highly soluble fats and oils. SELECTED ANSWER 👀 a. Anaerobic
conditions.
A category 2 SSO is:
a. any SSO which does not reach surface waters.
b. not reportable.
c. preventable.
d. any SSO which is not category 1. SELECTED ANSWER 👀 d. any SSO which is not
category 1.
Which tool would you use for cleaning under a pipe, or hard dirt near a pipe?
a. Miner's pick.
b. Wrench.
c. Drill.
d. Hammer. SELECTED ANSWER 👀 a. Miner's pick.
A torque wrench is used to tighten which device?
,a. Pipe clamp.
b. Drill chuck.
c. Light bulb.
d. Sheet metal screw SELECTED ANSWER 👀 a. Pipe clamp.
Which unit uses high water pressure and a vacuum to clean sewer lines?
a. Jetter
b. Mechanical rodder
c. Combination unit
d. Bucket machine SELECTED ANSWER 👀 c. Combination unit
In sewer maintenance, what is a pig?
a. A ball forced through a sewer line.
b. A power rod.
c. Any foul smelling equipment.
d. The hydraulic rodding truck. SELECTED ANSWER 👀 a. A ball forced through a sewer
line.
When pouring a concrete slab, which of the following tools is used to finish the concrete?
a. Grasshopper.
b. Tamper.
c. Trowel.
d. Vibrator. SELECTED ANSWER 👀 c. Trowel.
What tool is used to snare a broken section of sewer rod?
, a. Square stock corkscrew.
b. Auger.
c. Pickup tool.
d. Pull out tool. SELECTED ANSWER 👀 c. Pickup tool.
Why is the replacement of wastewater collection systems in some downtown streets
difficult?
a. Crowding of other underground utilities.
b. Records have not been maintained properly and the collection system is lost.
c. Some people have landscaped their backyards over the collection system and do not
want their yards dug up.
d. The streets will have to be paved again SELECTED ANSWER 👀 a. Crowding of other
underground utilities.
How can the velocity of water flowing in a sewer be estimated?
a. Driving between manholes and reading the speedometer.
b. Measuring the Manning's roughness coefficient for the sewer.
c. Measuring the time it takes for the dye to be carried by the wastewater between the two
manholes.
d. Measuring the time it takes to run between the two manholes. SELECTED ANSWER 👀
c. Measuring the time it takes for the dye to be carried by the wastewater between the two
manholes.
Drawings which are considered "As Built" would be?
a. Construction drawings issued to the contractor.
b. Corrected construction drawings showing changes made in the field installation.
c. Detailed drawings of proposed construction.
