CWEA Collection Systems Maintenance
Exam Q&A 100% Guaranteed Success
Why are gasoline and volatile solvents objectionable when present in a sewer? -
✔✔They produce an explosion hazard
You should never attempt to install, maintain, repair or replace electrical
equipment panels, controls, wiring or circuits unless - ✔✔You know what you
are doing, are qualified and are authorized
What are the different areas of traffic zones? - ✔✔Advance Warning Area,
Transition Area, Activity Area (buffer space and work space), Termination Area.
Could be 4 or 5, justify your answer on the test!
why should hydrogen sulfide be controlled? - ✔✔to protect from corrosion and
odors
Personnel entering a Permit Required Confined Space must have the following
training - ✔✔entry and rescue
To find protective gear before application of a product, you should: - ✔✔look at
the MSDS
The gas most commonly associated with septic wastewater is - ✔✔Hydrogen
Sulfide
1|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
,The lack of an unpleasant odor in a manhole, lift station or other structures does
not always mean that dangerous gases are not present because: - ✔✔some
dangerous gasses are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an explosion? -
✔✔combustible gas, adequate oxygen, heat and proper mixing of gas and
oxygen
what does the "transition area" mean in traffic control? - ✔✔It moves traffic out
of its normal path
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 features would you need to address when developing an S.O.P. for a
Lift Station failure? - ✔✔Traffic Control Plan, By-Pass connections, and Spill
containment
What tools are used with a power rodder? - ✔✔Spring Blades
Tools used for sewer rodding include: - ✔✔porcupine, root saw, square bar cork
screw
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©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
, 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 normally goes off if oxygen levels are below: - ✔✔19.5
percent
When developing an S.O.P. for scheduled maintenance of electrical equipment,
what program should be addressed as a primary safety guideline? - ✔✔The
L.O.T.O Program
What does L.O.T.O. Stand for? - ✔✔Lock out tag out
What document would you require to be referenced when developing an S.O.p.
for hazardous substace spill clean up? - ✔✔M.S.D.S.
in developing an S.O.P. for air monitoring in a Permit Required Confined Space
you would include what two factors? - ✔✔Placement of the blower and a
weather forecast
According to the State Water Resources Control Board Order No. 2006-003-
DWQ, each enrollee must develop and implement a system-specific: - ✔✔SSMP
(Sewer System Management Plan)
3|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
Exam Q&A 100% Guaranteed Success
Why are gasoline and volatile solvents objectionable when present in a sewer? -
✔✔They produce an explosion hazard
You should never attempt to install, maintain, repair or replace electrical
equipment panels, controls, wiring or circuits unless - ✔✔You know what you
are doing, are qualified and are authorized
What are the different areas of traffic zones? - ✔✔Advance Warning Area,
Transition Area, Activity Area (buffer space and work space), Termination Area.
Could be 4 or 5, justify your answer on the test!
why should hydrogen sulfide be controlled? - ✔✔to protect from corrosion and
odors
Personnel entering a Permit Required Confined Space must have the following
training - ✔✔entry and rescue
To find protective gear before application of a product, you should: - ✔✔look at
the MSDS
The gas most commonly associated with septic wastewater is - ✔✔Hydrogen
Sulfide
1|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
,The lack of an unpleasant odor in a manhole, lift station or other structures does
not always mean that dangerous gases are not present because: - ✔✔some
dangerous gasses are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an explosion? -
✔✔combustible gas, adequate oxygen, heat and proper mixing of gas and
oxygen
what does the "transition area" mean in traffic control? - ✔✔It moves traffic out
of its normal path
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 features would you need to address when developing an S.O.P. for a
Lift Station failure? - ✔✔Traffic Control Plan, By-Pass connections, and Spill
containment
What tools are used with a power rodder? - ✔✔Spring Blades
Tools used for sewer rodding include: - ✔✔porcupine, root saw, square bar cork
screw
2|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
, 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 normally goes off if oxygen levels are below: - ✔✔19.5
percent
When developing an S.O.P. for scheduled maintenance of electrical equipment,
what program should be addressed as a primary safety guideline? - ✔✔The
L.O.T.O Program
What does L.O.T.O. Stand for? - ✔✔Lock out tag out
What document would you require to be referenced when developing an S.O.p.
for hazardous substace spill clean up? - ✔✔M.S.D.S.
in developing an S.O.P. for air monitoring in a Permit Required Confined Space
you would include what two factors? - ✔✔Placement of the blower and a
weather forecast
According to the State Water Resources Control Board Order No. 2006-003-
DWQ, each enrollee must develop and implement a system-specific: - ✔✔SSMP
(Sewer System Management Plan)
3|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
