CWEA COLLECTIONS GRADE 2 PRACTICE TEST| 74 ACTUAL
QUESTIONS & CORRECT VERIFIED ANSWERS| GRADED A+
2025 UPDATE
1. Why are gasoline and volatile solvents objectionable when present in a
sewer? ANS >> They produce an explosion hazard
2. You should never attempt to install, troubleshoot, maintain, repair, or replace
electrical equipment unless ANS >> You know what you are doing, are qualified,
and are authorized.
3. How many different areas of traffic zones are there when working in road-
ways? ANS >> Five
4. Why should hydrogen sulfide be controlled? ANS >> To protect sewers and
structures from corrosion
5. Personnel entering a Permit Required Confined Space must have the follow-
ing training ANS >> Entry and rescue procedures
6. To find proper protective gear before application of a product, you wou
ANS >> -
1 B/ B
12
, ANS >> Look at the MSDS (Material Safety Data Sheet)
7. The gas most commonly associated with septic wastewater is ANS >>
Hydrogen Sulfide (H2S)
8. 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
9. What four conditions are necessary to create an explosion? ANS >>
Combustible gas, adequate oxygen, sufficient heat, and proper mixing of gas
and oxygen.
10. What does "transition area" mean in traffic control? ANS >> Moves traffic
out of its normal path
11. The term "transition area" is one component of a ANS >> Traffic Contr
Zone
12. What elements should be considered to improve worker safety in High
Speed Temporary Traffic Control Zones? ANS >> Rerouting traffic around the
work site, positioning of law enforcement officers in the temporary traffic control
zone, and work zone training.
13. What key factors would you need to address when developing an S.O.P.
for Lift Station failure? ANS >> Traffic control plan, by-pass connections, and
spill con- tainment.
14. "Spring Blades" are a type of tool used with ANS >> Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used
for ANS >> Sewer rodding
16. What tool would you use to cut VCP pipe? ANS >> Chain pipe cutter
17. Which conditions should a gas detection device test for? ANS >> Hydrogen
Sulfide, explosive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter? ANS >> Lower explosiv
limit
2 B/ B
12
QUESTIONS & CORRECT VERIFIED ANSWERS| GRADED A+
2025 UPDATE
1. Why are gasoline and volatile solvents objectionable when present in a
sewer? ANS >> They produce an explosion hazard
2. You should never attempt to install, troubleshoot, maintain, repair, or replace
electrical equipment unless ANS >> You know what you are doing, are qualified,
and are authorized.
3. How many different areas of traffic zones are there when working in road-
ways? ANS >> Five
4. Why should hydrogen sulfide be controlled? ANS >> To protect sewers and
structures from corrosion
5. Personnel entering a Permit Required Confined Space must have the follow-
ing training ANS >> Entry and rescue procedures
6. To find proper protective gear before application of a product, you wou
ANS >> -
1 B/ B
12
, ANS >> Look at the MSDS (Material Safety Data Sheet)
7. The gas most commonly associated with septic wastewater is ANS >>
Hydrogen Sulfide (H2S)
8. 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
9. What four conditions are necessary to create an explosion? ANS >>
Combustible gas, adequate oxygen, sufficient heat, and proper mixing of gas
and oxygen.
10. What does "transition area" mean in traffic control? ANS >> Moves traffic
out of its normal path
11. The term "transition area" is one component of a ANS >> Traffic Contr
Zone
12. What elements should be considered to improve worker safety in High
Speed Temporary Traffic Control Zones? ANS >> Rerouting traffic around the
work site, positioning of law enforcement officers in the temporary traffic control
zone, and work zone training.
13. What key factors would you need to address when developing an S.O.P.
for Lift Station failure? ANS >> Traffic control plan, by-pass connections, and
spill con- tainment.
14. "Spring Blades" are a type of tool used with ANS >> Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used
for ANS >> Sewer rodding
16. What tool would you use to cut VCP pipe? ANS >> Chain pipe cutter
17. Which conditions should a gas detection device test for? ANS >> Hydrogen
Sulfide, explosive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter? ANS >> Lower explosiv
limit
2 B/ B
12
