CWEA Collections Grade 2 Test | Most Recent
Questions and Answers | 2026 Update | Exam
Review Pack
• How many different areas of traffic zones are there when working in roadways? -
✓✓ Five
• Why should hydrogen sulfide be controlled? -✓✓ To protect sewers and
structures from corrosion
• Personnel entering a Permit Required Confined Space must have the following
training: -✓✓ Entry and rescue procedures
• To find proper protective gear before application of a product, you would: -✓✓
Look at the MSDS (Material Safety Data Sheet)
• The gas most commonly associated with septic wastewater is: -✓✓ Hydrogen
Sulfide (H2S)
• The lack of an unpleasant odor in a structure does not always mean that
dangerous gases are not present because: -✓✓ Some dangerous gases have no odor
• What four conditions are necessary to create an explosion? -✓✓ Combustible gas,
adequate oxygen, sufficient heat, and proper mixing of gas and oxygen.
• What does "transition area" mean in traffic control? -✓✓ Moves traffic out of its
normal path
, • The term "transition area" is one component of a: -✓✓ Traffic Control Zone
• What elements should be considered to improve worker safety in High Speed
Temporary Traffic Control Zones? -✓✓ 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? -✓✓ Traffic control plan, by-pass connections, and spill
containment.
• "Spring Blades" are a type of tool used with: -✓✓ Power Rodder
• Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for: -✓✓
Sewer rodding
• What tool would you use to cut VCP pipe? -✓✓ Chain pipe cutter
• Which conditions should a gas detection device test for? -✓✓ Hydrogen Sulfide,
explosive/flammable gases, oxygen.
• What does "LEL" mean on a gas detection meter? -✓✓ Lower explosive limit
• The oxygen level alarm in a gas detection meter is normally set to go off at
oxygen levels below: -✓✓ 19.5%
Questions and Answers | 2026 Update | Exam
Review Pack
• How many different areas of traffic zones are there when working in roadways? -
✓✓ Five
• Why should hydrogen sulfide be controlled? -✓✓ To protect sewers and
structures from corrosion
• Personnel entering a Permit Required Confined Space must have the following
training: -✓✓ Entry and rescue procedures
• To find proper protective gear before application of a product, you would: -✓✓
Look at the MSDS (Material Safety Data Sheet)
• The gas most commonly associated with septic wastewater is: -✓✓ Hydrogen
Sulfide (H2S)
• The lack of an unpleasant odor in a structure does not always mean that
dangerous gases are not present because: -✓✓ Some dangerous gases have no odor
• What four conditions are necessary to create an explosion? -✓✓ Combustible gas,
adequate oxygen, sufficient heat, and proper mixing of gas and oxygen.
• What does "transition area" mean in traffic control? -✓✓ Moves traffic out of its
normal path
, • The term "transition area" is one component of a: -✓✓ Traffic Control Zone
• What elements should be considered to improve worker safety in High Speed
Temporary Traffic Control Zones? -✓✓ 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? -✓✓ Traffic control plan, by-pass connections, and spill
containment.
• "Spring Blades" are a type of tool used with: -✓✓ Power Rodder
• Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for: -✓✓
Sewer rodding
• What tool would you use to cut VCP pipe? -✓✓ Chain pipe cutter
• Which conditions should a gas detection device test for? -✓✓ Hydrogen Sulfide,
explosive/flammable gases, oxygen.
• What does "LEL" mean on a gas detection meter? -✓✓ Lower explosive limit
• The oxygen level alarm in a gas detection meter is normally set to go off at
oxygen levels below: -✓✓ 19.5%
