CWEA Collection Systems Maintenance Grade 2 Exam (Latest 2025 / 2026 Update) Questions with Verified Answers | 100% Correct | Grade A.

CWEA Collection Systems Maintenance
Grade 2 Exam (Latest
Update) Questions with Verified Answers
| 100% Correct | Grade A.

What are the four conditions necessary to create an explosion?
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combustible gas, adequate oxygen, heat and proper mixing of
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gas and oxygen
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what does the "transition area" mean in traffic control?
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moves traffic out of its normal path
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what elements should be considered to improve worker safety in
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High speed Temporary Traffic control Zones?
i,- Rerouting traffic
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around the work site, positioning of law enforcement officers in
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the temporary traffic control zone, and work zone training
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What key features would you need to address when developing
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an S.O.P. for a Lift Station failure?
i,- Traffic Control Plan, By-Pass
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connections, and Spill containment i,- i,- i,-




What tools are used with a power rodder?
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,Tools used for sewer rodding include:
i,- i,- i,- i,- i,- i,- i,-porcupine, root saw, i,- i,- i,-



square bar cork screw
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What tool would you use to cut VCP pipe?
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,- Chain Pipe Cutter i,- i,-




Which conditions should a gas detection device test for?
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Hydrogen sulfide, explosive/flammable gases, oxygen
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What does "LEL" mean on a gas detection meter?
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Explosive Limit i,-




The oxygen level alarm normally goes off if oxygen levels are
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below: 19.5 percent
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When developing an S.O.P. for scheduled maintenance of
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electrical equipment, what program should be addressed as a
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primary safety guideline?
i,- The L.O.T.O Program i,- i,- i,- i,- i,-




What does L.O.T.O. Stand for?
i,- i,- i,- i,- i,- i,- Lock out tag out i,- i,- i,-

, What document would you require to be referenced when
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developing an S.O.p. for hazardous substace spill clean up?
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M.S.D.S.


in developing an S.O.P. for air monitoring in a Permit Required
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Confined Space you would include what two factors?
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Placement of the blower and a weather forecast i,- i,- i,- i,- i,- i,- i,-




According to the State Water Resources Control Board Order No.
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2006-003-DWQ, each enrollee must develop and implement a i,- i,- i,- i,- i,- i,- i,- i,-



system-specific: SSMP (Sewer System Management Plan) i,- i,- i,- i,- i,- i,-




Why are gasoline and volatile solvents objectionable when
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present in a sewer? They produce an explosion hazard
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You should never attempt to install, maintain, repair or replace
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electrical equipment panels, controls, wiring or circuits unless
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You know what you are doing, are qualified and are authorized
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What are the different areas of traffic zones?
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Warning Area, Transition Area, Activity Area (buffer space and
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work space), Termination Area. Could be 4 or 5, justify your
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answer on the test! i,- i,- i,-