Wastewater Collections Level II Questions and Answers Graded A+
Wet well probe systems are usually used for---- Which of the following is an indicator normally
determination(s) of level. used for determination of water pollution?
A. Approximate A. Fungi
B. Dual point B. Stapylococcus
C. continuous C. Algae
D. Single point - ANSWER -D. Single point D. Coliforms - ANSWER -D. Coliforms
A foreman's monthly report should include the What function does a ground fault circuit
A. Last time the supervisor read the report interrupter (GFCI) perform when there is an
B. Number of complaints received and imbalance of current between the hot and neutral
investigated conductors of a circuit?
C. number of monthly reports prepared A. bypass the ground fault
D. Number if qualifiable worker's available - B. grounds the equipment
ANSWER -B. Number of complaints C. opens the circuit
received and investigated. D. rebalances the current - ANSWER -C.
Opens the circuit
Solids that settle out in the bottom of a wet well
are called Plastic (PVC) pipe exposed to sunlight requires?
A. scum A. a protective coating
B. Colloidal solids B. Solvent weld fittings
C. suspended solids C. Special vertical support
D. Settleable solids - ANSWER -D. D. Nothing special - ANSWER -A. a
Settleable solids protective coating
What determines the amount of hydrogen sulfide The most important factor affecting the useful life
produced in a sewer? of piping is?
A. BOD concentration A. The ability of the materials used to resist
B. DO concentration internal and external corrosion
C. pH B. the depth of the pipe
D. SS concentration - ANSWER -C. pH C. the flexibility of the pipe
D. the smoothness of the inside of the pipe -
ANSWER -A. The ability of the materials
Two pumps of the same capacity operate used to resist internal and external corrosion
together with a single main. The discharge will
be--- in a typical pump station.
A. the same as one pump Sewers located adjacent to a ground level
B. more than one pump, but not twice as much storage reservoir are required to be located at
C. twice as much as one pump least 10 feet from the structure and constructed
D. more than twice as much as one pump - of watermain-type materials for a distance of at
ANSWER -B. more than one pump, but not least 50 feet from the storage reservoir. What is
twice as much the reason for the requirement?
A. to prevent a high ground water table adjacent
to the reservoir
, Wastewater Collections Level II Questions and Answers Graded A+
B. to protect the storage reservoir from A. Gaseous, liquid, combustible
contamination B. poisonous, gaseous, toxic
C. to reduce infiltration into the sewer C. toxic, perilous, poisonous
D. because vitrified-clay sewer pipe is easily D. poisonous, explosive, oxygen deficient -
broken - ANSWER -B. to protect the ANSWER -D. Poisonous, explosive, oxygen
storage reservoir from contamination deficient
The best way to track all maintenance work done What is the chemical symbol for sulfuric acid?
is through a A. HCI
A. closed circuit TV B. H2SO4
B. polaroid system C. CaSO4
C. tape recorder D. SuAc3 - ANSWER -B. H2SO4
D. work order system - ANSWER -D. Work
order system
A sewer blockage has been cleared by rodding.
What should be done to the cleared sewer next?
What is the V-notch weir best suited for A. allow the sewer to rest
measuring? B. check the sewer for proper exfiltration
A. large constant flows C. clean the sewer hydraulically to restore full
B. large irregular flows capacity
C. small constant flows D. clear the sewer with a bucket machine -
D. small irregular flows - ANSWER -C. ANSWER -C. Clean the sewer hydraulically
Small constant flows to restore full capacity
Which of the following is best qualified to work on If an air compressor has excessive oil
an electrical panel? consumption, the most likely cause of the
A. maintenance man problem would be
B. supervisor A. a broken drive coupling
C. electrician B. external oil leaks
D. crew leader - ANSWER -C. Electrician C. a faulty pump
D. worn rotor vanes - ANSWER -B. External
oil leaks
The testing procedure where a solution is added
drop by drop until the desired change in a
second solution is observed is Preventative maintenance on an amp-meter
A. drop addition includes checking the
B. secondary ion addition A. Wiring and contacts for pitting and fraying
C. titration B. Oil levels and greasing every 6 months
D. zwitter ion addition - ANSWER -C. C. Alignment and adjusting to proper tolerances
Titration D. Dosage and residual rates - ANSWER -
A. Wiring and contacts for pitting and fraying
What are the three basic classes of hazardous
atmospheres? What is the function of the bubbler control in a lift
Wet well probe systems are usually used for---- Which of the following is an indicator normally
determination(s) of level. used for determination of water pollution?
A. Approximate A. Fungi
B. Dual point B. Stapylococcus
C. continuous C. Algae
D. Single point - ANSWER -D. Single point D. Coliforms - ANSWER -D. Coliforms
A foreman's monthly report should include the What function does a ground fault circuit
A. Last time the supervisor read the report interrupter (GFCI) perform when there is an
B. Number of complaints received and imbalance of current between the hot and neutral
investigated conductors of a circuit?
C. number of monthly reports prepared A. bypass the ground fault
D. Number if qualifiable worker's available - B. grounds the equipment
ANSWER -B. Number of complaints C. opens the circuit
received and investigated. D. rebalances the current - ANSWER -C.
Opens the circuit
Solids that settle out in the bottom of a wet well
are called Plastic (PVC) pipe exposed to sunlight requires?
A. scum A. a protective coating
B. Colloidal solids B. Solvent weld fittings
C. suspended solids C. Special vertical support
D. Settleable solids - ANSWER -D. D. Nothing special - ANSWER -A. a
Settleable solids protective coating
What determines the amount of hydrogen sulfide The most important factor affecting the useful life
produced in a sewer? of piping is?
A. BOD concentration A. The ability of the materials used to resist
B. DO concentration internal and external corrosion
C. pH B. the depth of the pipe
D. SS concentration - ANSWER -C. pH C. the flexibility of the pipe
D. the smoothness of the inside of the pipe -
ANSWER -A. The ability of the materials
Two pumps of the same capacity operate used to resist internal and external corrosion
together with a single main. The discharge will
be--- in a typical pump station.
A. the same as one pump Sewers located adjacent to a ground level
B. more than one pump, but not twice as much storage reservoir are required to be located at
C. twice as much as one pump least 10 feet from the structure and constructed
D. more than twice as much as one pump - of watermain-type materials for a distance of at
ANSWER -B. more than one pump, but not least 50 feet from the storage reservoir. What is
twice as much the reason for the requirement?
A. to prevent a high ground water table adjacent
to the reservoir
, Wastewater Collections Level II Questions and Answers Graded A+
B. to protect the storage reservoir from A. Gaseous, liquid, combustible
contamination B. poisonous, gaseous, toxic
C. to reduce infiltration into the sewer C. toxic, perilous, poisonous
D. because vitrified-clay sewer pipe is easily D. poisonous, explosive, oxygen deficient -
broken - ANSWER -B. to protect the ANSWER -D. Poisonous, explosive, oxygen
storage reservoir from contamination deficient
The best way to track all maintenance work done What is the chemical symbol for sulfuric acid?
is through a A. HCI
A. closed circuit TV B. H2SO4
B. polaroid system C. CaSO4
C. tape recorder D. SuAc3 - ANSWER -B. H2SO4
D. work order system - ANSWER -D. Work
order system
A sewer blockage has been cleared by rodding.
What should be done to the cleared sewer next?
What is the V-notch weir best suited for A. allow the sewer to rest
measuring? B. check the sewer for proper exfiltration
A. large constant flows C. clean the sewer hydraulically to restore full
B. large irregular flows capacity
C. small constant flows D. clear the sewer with a bucket machine -
D. small irregular flows - ANSWER -C. ANSWER -C. Clean the sewer hydraulically
Small constant flows to restore full capacity
Which of the following is best qualified to work on If an air compressor has excessive oil
an electrical panel? consumption, the most likely cause of the
A. maintenance man problem would be
B. supervisor A. a broken drive coupling
C. electrician B. external oil leaks
D. crew leader - ANSWER -C. Electrician C. a faulty pump
D. worn rotor vanes - ANSWER -B. External
oil leaks
The testing procedure where a solution is added
drop by drop until the desired change in a
second solution is observed is Preventative maintenance on an amp-meter
A. drop addition includes checking the
B. secondary ion addition A. Wiring and contacts for pitting and fraying
C. titration B. Oil levels and greasing every 6 months
D. zwitter ion addition - ANSWER -C. C. Alignment and adjusting to proper tolerances
Titration D. Dosage and residual rates - ANSWER -
A. Wiring and contacts for pitting and fraying
What are the three basic classes of hazardous
atmospheres? What is the function of the bubbler control in a lift
