CWEA COLLECTIONS EXAM QUESTIONS AND ANSWERS 2025
Why are gasoline and volatile solvents objectionable when present in a sewer? - (ANSWER)They produce
an explosion hazard
You should never attempt to install, troubleshoot, maintain, repair, or replace electrical equipment
unless: - (ANSWER)You know what you are doing, are qualified, and are authorized.
How many different areas of traffic zones are there when working in roadways? - (ANSWER)Five
Why should hydrogen sulfide be controlled? - (ANSWER)To protect sewers and structures from
corrosion
Personnel entering a Permit Required Confined Space must have the following training: -
(ANSWER)Entry and rescue procedures
To find proper protective gear before application of a product, you would: - (ANSWER)Look at the MSDS
(Material Safety Data Sheet)
The gas most commonly associated with septic wastewater is: - (ANSWER)Hydrogen Sulfide (H2S)
The lack of an unpleasant odor in a structure does not always mean that dangerous gases are not
present because: - (ANSWER)Some dangerous gases have no odor
What four conditions are necessary to create an explosion? - (ANSWER)Combustible gas, adequate
oxygen, sufficient heat, and proper mixing of gas and oxygen.
What does "transition area" mean in traffic control? - (ANSWER)Moves traffic out of its normal path
The term "transition area" is one component of a: - (ANSWER)Traffic Control Zone
, CWEA COLLECTIONS EXAM QUESTIONS AND ANSWERS 2025
What elements should be considered to improve worker safety in High Speed Temporary Traffic Control
Zones? - (ANSWER)Rerouting traffic around the work site, positioning of law enforcement officers in the
temporary traffic control zone, and work zone training.
What key factors would you need to address when developing an S.O.P. for Lift Station failure? -
(ANSWER)Traffic control plan, by-pass connections, and spill containment.
"Spring Blades" are a type of tool used with: - (ANSWER)Power Rodder
Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for: - (ANSWER)Sewer rodding
What tool would you use to cut VCP pipe? - (ANSWER)Chain pipe cutter
Which conditions should a gas detection device test for? - (ANSWER)Hydrogen Sulfide,
explosive/flammable gases, oxygen.
What does "LEL" mean on a gas detection meter? - (ANSWER)Lower explosive limit
The oxygen level alarm in a gas detection meter is normally set to go off at oxygen levels below: -
(ANSWER)19.5%
When developing an S.O.P. for scheduled maintenance of electrical equipment, what program should be
addressed as a primary safety guideline? - (ANSWER)The L.O.T.O. (Lock Out Tag Out) Program
What document would you require to be referenced when developing an S.O.P. for hazardous substance
spill cleanup as well as spill containment? - (ANSWER)M.S.D.S.
Placement of the Blower and P.P.E. are two things you would include in developing an S.O.P. for air
monitoring in a: - (ANSWER)Permit Required Confined Space
Why are gasoline and volatile solvents objectionable when present in a sewer? - (ANSWER)They produce
an explosion hazard
You should never attempt to install, troubleshoot, maintain, repair, or replace electrical equipment
unless: - (ANSWER)You know what you are doing, are qualified, and are authorized.
How many different areas of traffic zones are there when working in roadways? - (ANSWER)Five
Why should hydrogen sulfide be controlled? - (ANSWER)To protect sewers and structures from
corrosion
Personnel entering a Permit Required Confined Space must have the following training: -
(ANSWER)Entry and rescue procedures
To find proper protective gear before application of a product, you would: - (ANSWER)Look at the MSDS
(Material Safety Data Sheet)
The gas most commonly associated with septic wastewater is: - (ANSWER)Hydrogen Sulfide (H2S)
The lack of an unpleasant odor in a structure does not always mean that dangerous gases are not
present because: - (ANSWER)Some dangerous gases have no odor
What four conditions are necessary to create an explosion? - (ANSWER)Combustible gas, adequate
oxygen, sufficient heat, and proper mixing of gas and oxygen.
What does "transition area" mean in traffic control? - (ANSWER)Moves traffic out of its normal path
The term "transition area" is one component of a: - (ANSWER)Traffic Control Zone
, CWEA COLLECTIONS EXAM QUESTIONS AND ANSWERS 2025
What elements should be considered to improve worker safety in High Speed Temporary Traffic Control
Zones? - (ANSWER)Rerouting traffic around the work site, positioning of law enforcement officers in the
temporary traffic control zone, and work zone training.
What key factors would you need to address when developing an S.O.P. for Lift Station failure? -
(ANSWER)Traffic control plan, by-pass connections, and spill containment.
"Spring Blades" are a type of tool used with: - (ANSWER)Power Rodder
Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for: - (ANSWER)Sewer rodding
What tool would you use to cut VCP pipe? - (ANSWER)Chain pipe cutter
Which conditions should a gas detection device test for? - (ANSWER)Hydrogen Sulfide,
explosive/flammable gases, oxygen.
What does "LEL" mean on a gas detection meter? - (ANSWER)Lower explosive limit
The oxygen level alarm in a gas detection meter is normally set to go off at oxygen levels below: -
(ANSWER)19.5%
When developing an S.O.P. for scheduled maintenance of electrical equipment, what program should be
addressed as a primary safety guideline? - (ANSWER)The L.O.T.O. (Lock Out Tag Out) Program
What document would you require to be referenced when developing an S.O.P. for hazardous substance
spill cleanup as well as spill containment? - (ANSWER)M.S.D.S.
Placement of the Blower and P.P.E. are two things you would include in developing an S.O.P. for air
monitoring in a: - (ANSWER)Permit Required Confined Space
