CWEA QUESTIONS AND ANSWERS ALL CORRECT
Legally responsible officals are required to report catagory 1 sanitary sewer overflows: Correct
Answer: Within two hours
When testing a manhole for explosive gases when should the first test be made? Correct Answer:
Before removing the manhole cover
When setting up to ventilate a manhole,the air inlet should be how many feet above street level?
Correct Answer: 2.0 feet
Which chemical may be used for odor control in a sewer system? Correct Answer: Hydrogen
peroxide
A category 2 is: Correct Answer: Any sso which is not a category 1
Which tool would you use for cleaning under a pipe, or hard dirt near a pipe? Correct Answer:
Miner's pick
When pouring a concrete slab, which of the following tools is used to finish the concrete?
Correct Answer: Trowel
How can the velocity of water flowing in a sewer be estimated? Correct Answer: Measuring the
time it takes for the dye to be carried by the wastewater between the two manholes
When a grade conflict exist between a water main and a sewer main, which of the following is
the best solution? Correct Answer: Have the water main adjusted and hold the grade on the
sewer main
A source of infiltration in a collection is: Correct Answer: Broken pipe joints
Pipe materials that are the least susceptible to corrosion by acids formed from gases generated in
a sewer is: Correct Answer: VCP
Liners are installed in sewers to correct problems caused by: Correct Answer: Infiltration
"Schedule 40" refers to: Correct Answer: Wall thickness
Category 1 SSO is: Correct Answer: A. Any volume reaching a water surface
B. Any volume entering a storm drain and not recovered
C. Any spill greater the a 1000 gallons
D. ALL THE ABOVE
In a 25 MPH zone, Distance of Flagger Station in the Advanced of a Work Space should be:
Correct Answer: 155 feet
Legally responsible officals are required to report catagory 1 sanitary sewer overflows: Correct
Answer: Within two hours
When testing a manhole for explosive gases when should the first test be made? Correct Answer:
Before removing the manhole cover
When setting up to ventilate a manhole,the air inlet should be how many feet above street level?
Correct Answer: 2.0 feet
Which chemical may be used for odor control in a sewer system? Correct Answer: Hydrogen
peroxide
A category 2 is: Correct Answer: Any sso which is not a category 1
Which tool would you use for cleaning under a pipe, or hard dirt near a pipe? Correct Answer:
Miner's pick
When pouring a concrete slab, which of the following tools is used to finish the concrete?
Correct Answer: Trowel
How can the velocity of water flowing in a sewer be estimated? Correct Answer: Measuring the
time it takes for the dye to be carried by the wastewater between the two manholes
When a grade conflict exist between a water main and a sewer main, which of the following is
the best solution? Correct Answer: Have the water main adjusted and hold the grade on the
sewer main
A source of infiltration in a collection is: Correct Answer: Broken pipe joints
Pipe materials that are the least susceptible to corrosion by acids formed from gases generated in
a sewer is: Correct Answer: VCP
Liners are installed in sewers to correct problems caused by: Correct Answer: Infiltration
"Schedule 40" refers to: Correct Answer: Wall thickness
Category 1 SSO is: Correct Answer: A. Any volume reaching a water surface
B. Any volume entering a storm drain and not recovered
C. Any spill greater the a 1000 gallons
D. ALL THE ABOVE
In a 25 MPH zone, Distance of Flagger Station in the Advanced of a Work Space should be:
Correct Answer: 155 feet
