CWEA COLLECTION SYSTEMS MAINTENANCE GRADE 1 & 2
PRACTICE TEST QUESTIONS WITH COMPLETE SOLUTIONS
What is the most critical task in operation and maintenance of wastewater collection? --
Answer ✔✔ Keeping wastewater flowing through pipes
Once enrolled in CIWQS, the "Collection System Questionnaire" must be updated at
least every: -- Answer ✔✔ 12 Months
You arrive at an SSO and relieve the stoppage 27 minutes after a call was placed to
report it. You find that the spill was running at 6 gallons per minute, how much sewage
went uncaptured? -- Answer ✔✔ 162 gallons
What would cause a pump to deliver less than its expected rate of discharge? -- Answer
✔✔ clogged impeller
Why are wear rings installed in a pump? -- Answer ✔✔ To concentrate wear on rings
instead of volute and impeller
What control devices are used to start and stop pumps? -- Answer ✔✔ Floats
,What type of pump is used in lift station wet wells? -- Answer ✔✔ Submersible
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
, 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
PRACTICE TEST QUESTIONS WITH COMPLETE SOLUTIONS
What is the most critical task in operation and maintenance of wastewater collection? --
Answer ✔✔ Keeping wastewater flowing through pipes
Once enrolled in CIWQS, the "Collection System Questionnaire" must be updated at
least every: -- Answer ✔✔ 12 Months
You arrive at an SSO and relieve the stoppage 27 minutes after a call was placed to
report it. You find that the spill was running at 6 gallons per minute, how much sewage
went uncaptured? -- Answer ✔✔ 162 gallons
What would cause a pump to deliver less than its expected rate of discharge? -- Answer
✔✔ clogged impeller
Why are wear rings installed in a pump? -- Answer ✔✔ To concentrate wear on rings
instead of volute and impeller
What control devices are used to start and stop pumps? -- Answer ✔✔ Floats
,What type of pump is used in lift station wet wells? -- Answer ✔✔ Submersible
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
, 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
