1|Pag e
CWEA COLLECTION SYSTEMS MAINTENANCE
EXAM|| ALL QUESTIONS AND 100% CORRECT
ANSWERS ALREADY GRADED A+|| LATEST AND
COMPLETE UPDATE 2025 WITH EXPERT
VERIFIED SOLUTIONS|| ASSURED PASS!!!
Based on new Best Practices of the Common Ground Alliance for marking
underground Utilities, the Inquiry Identification Number for an Underground
Service Alert (USA) is viable for how many days? - ANSWER: 28 days
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 ______________ person - ANSWER: Qualified
Person
You receive a dispatch at 4:30 pm informing you that raw sewage spewing out of a
manhole onto the ground and into an adjacent small stream. The caller said the
sewer has been overflowing since 2pm. You arrive at 5:15 and find that the spill is
overflowing at 166 gallons per minute. You clear the problem after 22 minutes,
how many reportable unrecoverable gallons of raw sewage had reached the creek?
- ANSWER: 36,022 gallons (don't be intimidated by how long these word
problems are! Just find the important information and take it one step at a time.)
"High priority subsurface installations ae high pressure natural gas pipelines with
normal operating pressures greater than 415 kPa gauge, petroleum pipelines,
conductors or cables that are potentially hazardous to employees, or the public, if
damaged." This paragraph indicates that before the start date of an excavation,
what should occur? - ANSWER: An agreed upon site visit
Temporary traffic control lanes created as part of a Temporary Traffic control Zone
setup on a street with a 35 MPH maximum speed limit shall be a minimum width
of ______ - ANSWER: 10 ft
,2|Pag e
For a nighttime Short Term Stationary Traffic Control Zone setup on low speed/
low volume street, the minimum height of the traffic cones used shall be ________
- ANSWER: 28 inches
After completing a Temporary Traffic Control setup for your work zone it is a
good practice to: - ANSWER: Observe how effective your TTC setup is working
to control traffic and make the necessary changes
When a citizen wants information regarding a maintenance operation you should: -
ANSWER: Give them as much factual information as you can and offer to help
them further
Before starting a maintenance operation in a basement located in the backyard of a
residence you should: - ANSWER: contact the resident and politely ask
permission to enter their backyard
Maintenance programs are based on: - ANSWER: Preventative and corrective
maintenance principles
The goal of preventative maintenance is to? - ANSWER: Avoid breakdowns,
severe damage, or harmful depreciation
What is the definition of a sanitary sewer system? - ANSWER: Any system of
pipes, pump stations, sewer lines, or other conveyances, upstream of a wastewater
treatment plant head work comprised of more than one mile of pipes and sewer
lines, used to collect and convey wastewater to a publicly owned treatment facility
What is the definition of "hydraulic capacity"? - ANSWER: The maximum flow a
pipe is expected to function at without creating a back up or discharge
, 3|Pag e
What is the minimum velocity in a gravity sewer pipe? - ANSWER: 2 ft/s. This
speed prevents the settling of solids, which in turn prevents corrosion and odor
build-up
What are the access points of a gravity sewer system? - ANSWER: Manholes, Lift
stations, Building connections, junction chambers, terminal cleanouts
What is an Easement? - ANSWER: The legal right that allows placement of sewer
in privately owned property
What is the springline? - ANSWER: The theoretical center of the pipe
What is the top of the pipe called? - ANSWER: The crown
What is the lowest point inside of a pipe called? - ANSWER: The invert
What are some examples of rigid pipe? - ANSWER: Vitrified clay pipe (VCP),
Concrete pipe, other rigid pipe, cast iron. They can support loads without as much
back fill/ side support, but cannot distort without cracking or breaking
What are some examples of flexible pipe? - ANSWER: Ductile-iron pipe, steel
pipe, thermoplastic pipe (PVC, HDPE, ABS), Orangeburg
What is the name of the testing that confirms your pipe was not bent under
pressure from being buried? - ANSWER: Mandrel Inspection, also know as
"pigging"
CWEA COLLECTION SYSTEMS MAINTENANCE
EXAM|| ALL QUESTIONS AND 100% CORRECT
ANSWERS ALREADY GRADED A+|| LATEST AND
COMPLETE UPDATE 2025 WITH EXPERT
VERIFIED SOLUTIONS|| ASSURED PASS!!!
Based on new Best Practices of the Common Ground Alliance for marking
underground Utilities, the Inquiry Identification Number for an Underground
Service Alert (USA) is viable for how many days? - ANSWER: 28 days
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 ______________ person - ANSWER: Qualified
Person
You receive a dispatch at 4:30 pm informing you that raw sewage spewing out of a
manhole onto the ground and into an adjacent small stream. The caller said the
sewer has been overflowing since 2pm. You arrive at 5:15 and find that the spill is
overflowing at 166 gallons per minute. You clear the problem after 22 minutes,
how many reportable unrecoverable gallons of raw sewage had reached the creek?
- ANSWER: 36,022 gallons (don't be intimidated by how long these word
problems are! Just find the important information and take it one step at a time.)
"High priority subsurface installations ae high pressure natural gas pipelines with
normal operating pressures greater than 415 kPa gauge, petroleum pipelines,
conductors or cables that are potentially hazardous to employees, or the public, if
damaged." This paragraph indicates that before the start date of an excavation,
what should occur? - ANSWER: An agreed upon site visit
Temporary traffic control lanes created as part of a Temporary Traffic control Zone
setup on a street with a 35 MPH maximum speed limit shall be a minimum width
of ______ - ANSWER: 10 ft
,2|Pag e
For a nighttime Short Term Stationary Traffic Control Zone setup on low speed/
low volume street, the minimum height of the traffic cones used shall be ________
- ANSWER: 28 inches
After completing a Temporary Traffic Control setup for your work zone it is a
good practice to: - ANSWER: Observe how effective your TTC setup is working
to control traffic and make the necessary changes
When a citizen wants information regarding a maintenance operation you should: -
ANSWER: Give them as much factual information as you can and offer to help
them further
Before starting a maintenance operation in a basement located in the backyard of a
residence you should: - ANSWER: contact the resident and politely ask
permission to enter their backyard
Maintenance programs are based on: - ANSWER: Preventative and corrective
maintenance principles
The goal of preventative maintenance is to? - ANSWER: Avoid breakdowns,
severe damage, or harmful depreciation
What is the definition of a sanitary sewer system? - ANSWER: Any system of
pipes, pump stations, sewer lines, or other conveyances, upstream of a wastewater
treatment plant head work comprised of more than one mile of pipes and sewer
lines, used to collect and convey wastewater to a publicly owned treatment facility
What is the definition of "hydraulic capacity"? - ANSWER: The maximum flow a
pipe is expected to function at without creating a back up or discharge
, 3|Pag e
What is the minimum velocity in a gravity sewer pipe? - ANSWER: 2 ft/s. This
speed prevents the settling of solids, which in turn prevents corrosion and odor
build-up
What are the access points of a gravity sewer system? - ANSWER: Manholes, Lift
stations, Building connections, junction chambers, terminal cleanouts
What is an Easement? - ANSWER: The legal right that allows placement of sewer
in privately owned property
What is the springline? - ANSWER: The theoretical center of the pipe
What is the top of the pipe called? - ANSWER: The crown
What is the lowest point inside of a pipe called? - ANSWER: The invert
What are some examples of rigid pipe? - ANSWER: Vitrified clay pipe (VCP),
Concrete pipe, other rigid pipe, cast iron. They can support loads without as much
back fill/ side support, but cannot distort without cracking or breaking
What are some examples of flexible pipe? - ANSWER: Ductile-iron pipe, steel
pipe, thermoplastic pipe (PVC, HDPE, ABS), Orangeburg
What is the name of the testing that confirms your pipe was not bent under
pressure from being buried? - ANSWER: Mandrel Inspection, also know as
"pigging"
