CWEA Collec ons Grade 2 Prac ce Test Ques ons and
answers Updated NEW!! 2025/2026
Why are gasoline and vola le solvents objec onable when present in a sewer? - Ans They
produce an explosion hazard
You should never a empt to install, troubleshoot, maintain, repair, or replace electrical
equipment unless: - Ans You know what you are doing, are qualified, and are authorized.
How many different areas of traffic zones are there when working in roadways? - Ans Five
Why should hydrogen sulfide be controlled? - Ans To protect sewers and structures from
corrosion
Personnel entering a Permit Required Confined Space must have the following training: - Ans
Entry and rescue procedures
To find proper protec ve gear before applica on of a product, you would: - Ans Look at the
MSDS (Material Safety Data Sheet)
The gas most commonly associated with sep c wastewater is: - Ans Hydrogen Sulfide (H2S)
The lack of an unpleasant odor in a structure does not always mean that dangerous gases are
not present because: - Ans Some dangerous gases have no odor
What four condi ons are necessary to create an explosion? - Ans Combus ble gas, adequate
oxygen, sufficient heat, and proper mixing of gas and oxygen.
What does "transi on area" mean in traffic control? - Ans Moves traffic out of its normal path
, The term "transi on area" is one component of a: - Ans Traffic Control Zone
What elements should be considered to improve worker safety in High Speed Temporary Traffic
Control Zones? - Ans Rerou ng traffic around the work site, posi oning 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 Li: Sta on failure? -
Ans Traffic control plan, by-pass connec ons, and spill containment.
"Spring Blades" are a type of tool used with: - Ans Power Rodder
Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for: - Ans Sewer rodding
What tool would you use to cut VCP pipe? - Ans Chain pipe cu er
Which condi ons should a gas detec on device test for? - Ans Hydrogen Sulfide,
explosive/flammable gases, oxygen.
What does "LEL" mean on a gas detec on meter? - Ans Lower explosive limit
The oxygen level alarm in a gas detec on meter is normally set to go off at oxygen levels below:
- Ans 19.5%
When developing an S.O.P. for scheduled maintenance of electrical equipment, what program
should be addressed as a primary safety guideline? - Ans The L.O.T.O. (Lock Out Tag Out)
Program
answers Updated NEW!! 2025/2026
Why are gasoline and vola le solvents objec onable when present in a sewer? - Ans They
produce an explosion hazard
You should never a empt to install, troubleshoot, maintain, repair, or replace electrical
equipment unless: - Ans You know what you are doing, are qualified, and are authorized.
How many different areas of traffic zones are there when working in roadways? - Ans Five
Why should hydrogen sulfide be controlled? - Ans To protect sewers and structures from
corrosion
Personnel entering a Permit Required Confined Space must have the following training: - Ans
Entry and rescue procedures
To find proper protec ve gear before applica on of a product, you would: - Ans Look at the
MSDS (Material Safety Data Sheet)
The gas most commonly associated with sep c wastewater is: - Ans Hydrogen Sulfide (H2S)
The lack of an unpleasant odor in a structure does not always mean that dangerous gases are
not present because: - Ans Some dangerous gases have no odor
What four condi ons are necessary to create an explosion? - Ans Combus ble gas, adequate
oxygen, sufficient heat, and proper mixing of gas and oxygen.
What does "transi on area" mean in traffic control? - Ans Moves traffic out of its normal path
, The term "transi on area" is one component of a: - Ans Traffic Control Zone
What elements should be considered to improve worker safety in High Speed Temporary Traffic
Control Zones? - Ans Rerou ng traffic around the work site, posi oning 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 Li: Sta on failure? -
Ans Traffic control plan, by-pass connec ons, and spill containment.
"Spring Blades" are a type of tool used with: - Ans Power Rodder
Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for: - Ans Sewer rodding
What tool would you use to cut VCP pipe? - Ans Chain pipe cu er
Which condi ons should a gas detec on device test for? - Ans Hydrogen Sulfide,
explosive/flammable gases, oxygen.
What does "LEL" mean on a gas detec on meter? - Ans Lower explosive limit
The oxygen level alarm in a gas detec on meter is normally set to go off at oxygen levels below:
- Ans 19.5%
When developing an S.O.P. for scheduled maintenance of electrical equipment, what program
should be addressed as a primary safety guideline? - Ans The L.O.T.O. (Lock Out Tag Out)
Program
