1|Page
CWEA Wastewater Facility Safety Certification Exam
Practice Questions And Correct Answers||Verified
Exam!!!|| (Verified Answers) Plus Rationale 2026/2027
Q&A| Instant Download Pdf
Personnel entering a Permit Required Confined Space
must have the following training - Answer-entry and rescue
To find protective gear before application of a product, you
should: - Answer-look at the MSDS
The gas most commonly associated with septic
wastewater is - Answer-Hydrogen Sulfide
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: - Answer-some dangerous
gasses are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an
explosion? - Answer-combustible gas, adequate oxygen,
heat and proper mixing of gas and oxygen
,2|Page
what does the "transition area" mean in traffic control? -
Answer-It moves traffic out of its normal path
what elements should be considered to improve worker
safety in High speed Temporary Traffic control Zones? -
Answer-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? - Answer-
Traffic Control Plan, By-Pass connections, and Spill
containment
What tools are used with a power rodder? - Answer-Spring
Blades
Tools used for sewer rodding include: - Answer-porcupine,
root saw, square bar cork screw
What tool would you use to cut VCP pipe? - Answer-Chain
Pipe Cutter
, 3|Page
Which conditions should a gas detection device test for? -
Answer-Hydrogen sulfide, explosive/flammable gases,
oxygen
What does "LEL" mean on a gas detection meter? -
Answer-Lower Explosive Limit
The oxygen level alarm normally goes off if oxygen levels
are below: - Answer-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? - Answer-The L.O.T.O
Program
What does L.O.T.O. Stand for? - Answer-Lock out tag out
What document would you require to be referenced when
developing an S.O.p. for hazardous substace spill clean
up? - Answer-M.S.D.S.
in developing an S.O.P. for air monitoring in a Permit
Required Confined Space you would include what two
CWEA Wastewater Facility Safety Certification Exam
Practice Questions And Correct Answers||Verified
Exam!!!|| (Verified Answers) Plus Rationale 2026/2027
Q&A| Instant Download Pdf
Personnel entering a Permit Required Confined Space
must have the following training - Answer-entry and rescue
To find protective gear before application of a product, you
should: - Answer-look at the MSDS
The gas most commonly associated with septic
wastewater is - Answer-Hydrogen Sulfide
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: - Answer-some dangerous
gasses are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an
explosion? - Answer-combustible gas, adequate oxygen,
heat and proper mixing of gas and oxygen
,2|Page
what does the "transition area" mean in traffic control? -
Answer-It moves traffic out of its normal path
what elements should be considered to improve worker
safety in High speed Temporary Traffic control Zones? -
Answer-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? - Answer-
Traffic Control Plan, By-Pass connections, and Spill
containment
What tools are used with a power rodder? - Answer-Spring
Blades
Tools used for sewer rodding include: - Answer-porcupine,
root saw, square bar cork screw
What tool would you use to cut VCP pipe? - Answer-Chain
Pipe Cutter
, 3|Page
Which conditions should a gas detection device test for? -
Answer-Hydrogen sulfide, explosive/flammable gases,
oxygen
What does "LEL" mean on a gas detection meter? -
Answer-Lower Explosive Limit
The oxygen level alarm normally goes off if oxygen levels
are below: - Answer-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? - Answer-The L.O.T.O
Program
What does L.O.T.O. Stand for? - Answer-Lock out tag out
What document would you require to be referenced when
developing an S.O.p. for hazardous substace spill clean
up? - Answer-M.S.D.S.
in developing an S.O.P. for air monitoring in a Permit
Required Confined Space you would include what two
