CWEA Collections Grade 2 Practice Test
2024-2025 Edition. Questions & Correct
Verified Answers. Graded A+
"Spring Blades" are a type of tool used with: - ANSPower Rodder
A clogged impeller can cause a pump to deliver less than its expected rate of discharge,
true or false? - ANSTrue
A flow of 650 gpm would be how many MGD? - ANS650 gpm x (1440 min / 1 day) =
936000 gpd
936000 x (1 MG / 1000000 gal) = 0.936 MGD
A person who completes a training program in accordance with the requirements of Title
8, Calif. Code of Regulations, Minimum Guidelines of the Common Ground Alliance is
considered a Qualified Person, true or false? - ANSTrue
A wet well 20 feet in diameter is filled with water to a depth of 10 feet. How many
gallons does the tank contain? - ANSVolume = 0.785 x Diameter x Diameter x Height
Volume = 0.785 x 20 ft x 20 ft x 10 ft
Volume = 3140 cu ft
Convert to gallons:
3140 cu ft x (7.48 gal / 1 cu ft) = 23487.2 gal
According to a State Water Resources Control Board order, each Enrollee must develop
and implement a system-specific: - ANSSewer System Management Plan (SSMP)
After completing a Temporary Traffic Control setup for your work zone it is a good
practice to: - ANSObserve how effective your TTC setup is working to control traffic and
make the necessary changes to it if necessary
An upright circular cylinder tank (flat bottom) has a diameter of 12 feet. When filled to a
depth of 8 feet, what is the volume? - ANSVolume = 0.785 x Diameter x Diameter x
Height
Volume = 0.785 x 12 ft x 12 ft x 8 ft
Volume = 904.32 cu ft
Barrels, lids, cones, and backflow devices are all included in Manholes, true or false? -
ANSFalse. All are included except for backflow devices.
Before starting a maintenance operation in a basement located in the backyard of a
residence you should contact the resident and politely as permission to enter the
backyard, true or false? - ANSTrue
, Biological activity in long, sluggish-flow, flat grade sewer lines will likely cause odors,
true or false? - ANSTrue
Category 1 SSO's that discharge to a drainage channel and/or surface water must be
reported within: - ANS2 hours
Centrifugal pump parts include a volute, true or false? - ANSTrue
During the 24-hour operation a lift station pumped 3000 gallons per minute for a
community of 27000. What is the per capita pumped in gallons per day? - ANSGPD /
Capita = Volume Pumped Per Day / Number of people
Volume = (3000 gal / 1 min) x (60 min / 1 hr) x (24 hr / 1 day)
Volume = 4320000 gal
GPD / Capita = 4320000 gal / 27000 people
GPD / Capita = 160
Emergency stoppages in pipelines may be cleared safely by use of high velocity
cleaners, true or false? - ANSTrue
Flatter sewer line grades may cause added sewer maintenance expense and odor
nuisance. The problem is most likely caused by: - ANSA decrease in velocity allowing
organic and inorganic solids to settle out
Floats can be used to start or stop pumps, true or false? - ANSTrue
For a night time Short Term Stationary Temporary Traffic Control Zone setup on low
speed/low volume street, the minimum height of the traffic cones used shall be: -
ANS28 inches
How long is an Inquiry Identification Number for an Underground Service Alert (USA)
viable for? - ANS28 days
How many different areas of traffic zones are there when working in roadways? -
ANSFive
How many types of common shoring are there? - ANS6
How often must an excavation site and adjacent areas be inspected for hazardous
conditions? - ANSDaily
If an 8 inch force main has a metered flow rate of 400000 gpd, what is the velocity? -
ANSVelocity = Flow / Area
Area = 0.785 x Diameter x Diameter
When finding Area, convert Diameter into feet
8 in x (1 ft / 12 in) = 0.667 ft
2024-2025 Edition. Questions & Correct
Verified Answers. Graded A+
"Spring Blades" are a type of tool used with: - ANSPower Rodder
A clogged impeller can cause a pump to deliver less than its expected rate of discharge,
true or false? - ANSTrue
A flow of 650 gpm would be how many MGD? - ANS650 gpm x (1440 min / 1 day) =
936000 gpd
936000 x (1 MG / 1000000 gal) = 0.936 MGD
A person who completes a training program in accordance with the requirements of Title
8, Calif. Code of Regulations, Minimum Guidelines of the Common Ground Alliance is
considered a Qualified Person, true or false? - ANSTrue
A wet well 20 feet in diameter is filled with water to a depth of 10 feet. How many
gallons does the tank contain? - ANSVolume = 0.785 x Diameter x Diameter x Height
Volume = 0.785 x 20 ft x 20 ft x 10 ft
Volume = 3140 cu ft
Convert to gallons:
3140 cu ft x (7.48 gal / 1 cu ft) = 23487.2 gal
According to a State Water Resources Control Board order, each Enrollee must develop
and implement a system-specific: - ANSSewer System Management Plan (SSMP)
After completing a Temporary Traffic Control setup for your work zone it is a good
practice to: - ANSObserve how effective your TTC setup is working to control traffic and
make the necessary changes to it if necessary
An upright circular cylinder tank (flat bottom) has a diameter of 12 feet. When filled to a
depth of 8 feet, what is the volume? - ANSVolume = 0.785 x Diameter x Diameter x
Height
Volume = 0.785 x 12 ft x 12 ft x 8 ft
Volume = 904.32 cu ft
Barrels, lids, cones, and backflow devices are all included in Manholes, true or false? -
ANSFalse. All are included except for backflow devices.
Before starting a maintenance operation in a basement located in the backyard of a
residence you should contact the resident and politely as permission to enter the
backyard, true or false? - ANSTrue
, Biological activity in long, sluggish-flow, flat grade sewer lines will likely cause odors,
true or false? - ANSTrue
Category 1 SSO's that discharge to a drainage channel and/or surface water must be
reported within: - ANS2 hours
Centrifugal pump parts include a volute, true or false? - ANSTrue
During the 24-hour operation a lift station pumped 3000 gallons per minute for a
community of 27000. What is the per capita pumped in gallons per day? - ANSGPD /
Capita = Volume Pumped Per Day / Number of people
Volume = (3000 gal / 1 min) x (60 min / 1 hr) x (24 hr / 1 day)
Volume = 4320000 gal
GPD / Capita = 4320000 gal / 27000 people
GPD / Capita = 160
Emergency stoppages in pipelines may be cleared safely by use of high velocity
cleaners, true or false? - ANSTrue
Flatter sewer line grades may cause added sewer maintenance expense and odor
nuisance. The problem is most likely caused by: - ANSA decrease in velocity allowing
organic and inorganic solids to settle out
Floats can be used to start or stop pumps, true or false? - ANSTrue
For a night time Short Term Stationary Temporary Traffic Control Zone setup on low
speed/low volume street, the minimum height of the traffic cones used shall be: -
ANS28 inches
How long is an Inquiry Identification Number for an Underground Service Alert (USA)
viable for? - ANS28 days
How many different areas of traffic zones are there when working in roadways? -
ANSFive
How many types of common shoring are there? - ANS6
How often must an excavation site and adjacent areas be inspected for hazardous
conditions? - ANSDaily
If an 8 inch force main has a metered flow rate of 400000 gpd, what is the velocity? -
ANSVelocity = Flow / Area
Area = 0.785 x Diameter x Diameter
When finding Area, convert Diameter into feet
8 in x (1 ft / 12 in) = 0.667 ft
