CWEA Collections Grade 2 Practice Test | With 100% Verified
Solutions | 2026
1. Why are gasoline and volatile solvents objection- They produce an explosion haz-
able when present in a sewer? ard
2. You should never attempt to install, troubleshoot, You know what you are doing, are
maintain, repair, or replace electrical equipment qualified, and are authorized.
unless:
3. How many different areas of traffic zones are Five
there when working in roadways?
4. Why should hydrogen sulfide be controlled? To protect sewers and structures
from corrosion
5. Personnel entering a Permit Required Confined Entry and rescue procedures
Space must have the following training:
6. To find proper protective gear before application Look at the MSDS (Material Safe-
of a product, you would: ty Data Sheet)
7. The gas most commonly associated with septic Hydrogen Sulfide (H2S)
wastewater is:
8. The lack of an unpleasant odor in a structure does Some dangerous gases have no
not always mean that dangerous gases are not odor
present because:
9. What four conditions are necessary to create an Combustible gas, adequate oxy-
explosion? gen, suflcient heat, and proper
mixing of gas and oxygen.
10. What does "transition area" mean in traffic con- Moves traflc out of its normal
trol? path
, CWEA Collections Grade 2 Practice Test | With 100% Verified
Solutions | 2026
11. The term "transition area" is one component of a: Traflc Control Zone
12. What elements should be considered to improve Rerouting traflc around the work
worker safety in High Speed Temporary Traffic site, positioning of law enforce-
Control Zones? ment oflcers in the temporary
traflc control zone, and work
zone training.
13. What key factors would you need to address when Traflc control plan, by-pass con-
developing an S.O.P. for Lift Station failure? nections, and spill containment.
14. "Spring Blades" are a type of tool used with: Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw Sewer rodding
are all tools used for:
16. What tool would you use to cut VCP pipe? Chain pipe cutter
17. Which conditions should a gas detection device Hydrogen Sulfide, explo-
test for? sive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter? Lower explosive limit
19. The oxygen level alarm in a gas detection meter is 19.5%
normally set to go off at oxygen levels below:
20. When developing an S.O.P. for scheduled main- The L.O.T.O. (Lock Out Tag Out)
tenance of electrical equipment, what program Program
should be addressed as a primary safety guide-
line?
21. What document would you require to be refer- M.S.D.S.
enced when developing an S.O.P. for hazardous
Solutions | 2026
1. Why are gasoline and volatile solvents objection- They produce an explosion haz-
able when present in a sewer? ard
2. You should never attempt to install, troubleshoot, You know what you are doing, are
maintain, repair, or replace electrical equipment qualified, and are authorized.
unless:
3. How many different areas of traffic zones are Five
there when working in roadways?
4. Why should hydrogen sulfide be controlled? To protect sewers and structures
from corrosion
5. Personnel entering a Permit Required Confined Entry and rescue procedures
Space must have the following training:
6. To find proper protective gear before application Look at the MSDS (Material Safe-
of a product, you would: ty Data Sheet)
7. The gas most commonly associated with septic Hydrogen Sulfide (H2S)
wastewater is:
8. The lack of an unpleasant odor in a structure does Some dangerous gases have no
not always mean that dangerous gases are not odor
present because:
9. What four conditions are necessary to create an Combustible gas, adequate oxy-
explosion? gen, suflcient heat, and proper
mixing of gas and oxygen.
10. What does "transition area" mean in traffic con- Moves traflc out of its normal
trol? path
, CWEA Collections Grade 2 Practice Test | With 100% Verified
Solutions | 2026
11. The term "transition area" is one component of a: Traflc Control Zone
12. What elements should be considered to improve Rerouting traflc around the work
worker safety in High Speed Temporary Traffic site, positioning of law enforce-
Control Zones? ment oflcers in the temporary
traflc control zone, and work
zone training.
13. What key factors would you need to address when Traflc control plan, by-pass con-
developing an S.O.P. for Lift Station failure? nections, and spill containment.
14. "Spring Blades" are a type of tool used with: Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw Sewer rodding
are all tools used for:
16. What tool would you use to cut VCP pipe? Chain pipe cutter
17. Which conditions should a gas detection device Hydrogen Sulfide, explo-
test for? sive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter? Lower explosive limit
19. The oxygen level alarm in a gas detection meter is 19.5%
normally set to go off at oxygen levels below:
20. When developing an S.O.P. for scheduled main- The L.O.T.O. (Lock Out Tag Out)
tenance of electrical equipment, what program Program
should be addressed as a primary safety guide-
line?
21. What document would you require to be refer- M.S.D.S.
enced when developing an S.O.P. for hazardous
