CWEA Collection Systems
Maintenance Exam QUESTIONS AND
ANSWERS 100% RATED CORRECT
WITH 100% SURE PASS|GRADED A+
Why are gasoline and volatile solvents objectionable when present in a sewer? - CORRECT ANSWERS
They produce an explosion hazard
You should never attempt to install, maintain, repair or replace electrical equipment panels, controls,
wiring or circuits unless - CORRECT ANSWERS You know what you are doing, are qualified
and are authorized
What are the different areas of traffic zones? - CORRECT ANSWERS 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? - CORRECT ANSWERS to protect from
corrosion and odors
Personnel entering a Permit Required Confined Space must have the following training - CORRECT
ANSWERS entry and rescue
To find protective gear before application of a product, you should: - CORRECT ANSWERS
look at the MSDS
The gas most commonly associated with septic wastewater is - CORRECT ANSWERS
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: - CORRECT ANSWERS some dangerous gasses
are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an explosion? - CORRECT ANSWERS
combustible gas, adequate oxygen, heat and proper mixing of gas and oxygen
what does the "transition area" mean in traffic control? - CORRECT ANSWERS It moves
traffic out of its normal path
what elements should be considered to improve worker safety in High speed Temporary Traffic control
Zones? - CORRECT ANSWERS 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? -
CORRECT ANSWERS Traffic Control Plan, By-Pass connections, and Spill containment
What tools are used with a power rodder? - CORRECT ANSWERS Spring Blades
Tools used for sewer rodding include: - CORRECT ANSWERS porcupine, root saw, square
bar cork screw
What tool would you use to cut VCP pipe? - CORRECT ANSWERS Chain Pipe Cutter
Which conditions should a gas detection device test for? - CORRECT ANSWERS Hydrogen
sulfide, explosive/flammable gases, oxygen
What does "LEL" mean on a gas detection meter? - CORRECT ANSWERS Lower Explosive
Limit
, The oxygen level alarm normally goes off if oxygen levels are below: - CORRECT ANSWERS
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? - CORRECT ANSWERS The L.O.T.O Program
What does L.O.T.O. Stand for? - CORRECT ANSWERS Lock out tag out
What document would you require to be referenced when developing an S.O.p. for hazardous substace
spill clean up? - CORRECT ANSWERS 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? - CORRECT ANSWERS 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: - CORRECT ANSWERS SSMP (Sewer System
Management Plan)
How long do you have to report a category 1 SSO? - CORRECT ANSWERS 2 hours
To report in the Statewide SSO Data-base California Integrated Water Quality System (CIWQS) regarding
the location of a Category 2 SSO, how must you report the location? - CORRECT ANSWERS
Using the GPS coordinates
Biological activity in long, sluggish-flow, flat grade sewer lines will likely cause: - CORRECT ANSWERS
odors
Maintenance Exam QUESTIONS AND
ANSWERS 100% RATED CORRECT
WITH 100% SURE PASS|GRADED A+
Why are gasoline and volatile solvents objectionable when present in a sewer? - CORRECT ANSWERS
They produce an explosion hazard
You should never attempt to install, maintain, repair or replace electrical equipment panels, controls,
wiring or circuits unless - CORRECT ANSWERS You know what you are doing, are qualified
and are authorized
What are the different areas of traffic zones? - CORRECT ANSWERS 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? - CORRECT ANSWERS to protect from
corrosion and odors
Personnel entering a Permit Required Confined Space must have the following training - CORRECT
ANSWERS entry and rescue
To find protective gear before application of a product, you should: - CORRECT ANSWERS
look at the MSDS
The gas most commonly associated with septic wastewater is - CORRECT ANSWERS
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: - CORRECT ANSWERS some dangerous gasses
are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an explosion? - CORRECT ANSWERS
combustible gas, adequate oxygen, heat and proper mixing of gas and oxygen
what does the "transition area" mean in traffic control? - CORRECT ANSWERS It moves
traffic out of its normal path
what elements should be considered to improve worker safety in High speed Temporary Traffic control
Zones? - CORRECT ANSWERS 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? -
CORRECT ANSWERS Traffic Control Plan, By-Pass connections, and Spill containment
What tools are used with a power rodder? - CORRECT ANSWERS Spring Blades
Tools used for sewer rodding include: - CORRECT ANSWERS porcupine, root saw, square
bar cork screw
What tool would you use to cut VCP pipe? - CORRECT ANSWERS Chain Pipe Cutter
Which conditions should a gas detection device test for? - CORRECT ANSWERS Hydrogen
sulfide, explosive/flammable gases, oxygen
What does "LEL" mean on a gas detection meter? - CORRECT ANSWERS Lower Explosive
Limit
, The oxygen level alarm normally goes off if oxygen levels are below: - CORRECT ANSWERS
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? - CORRECT ANSWERS The L.O.T.O Program
What does L.O.T.O. Stand for? - CORRECT ANSWERS Lock out tag out
What document would you require to be referenced when developing an S.O.p. for hazardous substace
spill clean up? - CORRECT ANSWERS 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? - CORRECT ANSWERS 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: - CORRECT ANSWERS SSMP (Sewer System
Management Plan)
How long do you have to report a category 1 SSO? - CORRECT ANSWERS 2 hours
To report in the Statewide SSO Data-base California Integrated Water Quality System (CIWQS) regarding
the location of a Category 2 SSO, how must you report the location? - CORRECT ANSWERS
Using the GPS coordinates
Biological activity in long, sluggish-flow, flat grade sewer lines will likely cause: - CORRECT ANSWERS
odors
