ADEQ Wastewater Collections 1 Practice Test

These questions are part of the practice quiz. Start practicing

• Why must you always know where a cleaning tool is in the sewer?
• In the sequence of steps for addressing a motor fire, what step follows extinguishing the fire?
• A common name appurtenance used to keep an accidental flow of wastewater from entering a building is called?
• Which of the following is a source of excessive clear water in a collection system?
• Which tool is used to physically remove obstructions in sewers and is associated with rodding?
• Which item is an accessory used in power-bucket machine cleaning?
• What must be checked before entering a manhole?
• A venturi meter measures quantity of fluid by
• Anaerobic wastewater is frequently corrosive to materials it contacts, especially:
• In a rainfall-affected lift station, the most likely valve issue causing rapid lag pump cycling is which option?
• Which factor is the most essential when planning lift station access?
• Grease in sewers is mechanically removed by which method?
• Chlorine cylinders should be stored
• What information would you consider while clearing a stoppage in a sewer?
• With the completion of a sewer cleaning job, which must be done at the manhole?
• Lift station failures include which of the following?
• What is the primary purpose of a backwater valve?
• Which permit is required for a combined sewer overflow outfall?
• Which of the following are construction defects that can cause problems in wastewater collection systems?
• In a trench deep enough to require a ladder, the worker must not be required to travel more than _____ to get to the ladder?
• The record log of a hydraulic cleaning operation should include which item?
• You should get out of the manhole as soon as
• In force mains, a pig is described as
• What is a mechanical means to remove material from a sewer?
• Which statement best describes the effect of flat sewer grades on solids in the lines?
• Tools used for sewer rodding include
• During concrete curing for a sewer slab, which tool is used to compact the concrete and bring a cement film to the surface for finishing?
• Which of the following statements about infiltration in sewer systems is true?
• In problem solving, which step involves clearly stating the issue to be addressed?
• What is the most important traffic safety consideration on a work site?
• A common name appurtenance used to keep an accidental flow of wastewater from entering a building is called
• Which method is best for recording all work performed?
• Recruiting of new utility employees falls within which management category?
• A kilowatt is equal to which of the following?
• Biological activity in long, sluggish-flow, flat-grade sewer lines will likely
• What equipment is effective in removing an emergency stoppage?
• A pH of 7 is considered:
• When packing a centrifugal pump, the packing gland should be tightened
• The essence of control is which of the following?
• Which action is typically done at the end of a sewer cleaning job to ensure the area is left safe and clean?
• During rainfall, the wet well inflow increases and the system shows rapid cycling; lag pump motor shaft turns backwards when off. What is the most likely valve problem?
• What information must be on a warning tag attached to a switch that has been locked out?
• A lift station's wet well level readings are erratic with alternating high and low levels, and both pumps start and stop inconsistently. What is the most likely cause?
• Which item is not typically included in a wastewater utility budget?
• You have been directed to examine and review the plans and specifications for a new wastewater pump station prior to the advertising or construction bids. Which of following is of least significance?
• The most important reason for washing hands thoroughly after taking a wastewater sample is to
• Why are gasoline and volatile solvents objectionable where present in a sewer?
• Which of the following is not part of a good public relations program?
• Sources of excessive clear water in a collection system include
• A pH of 6 is
• Which parameter most affects hydrogen sulfide generation in sewer systems?
• What information must be on a warning tag attached to a switch that has been locked out?
• Mechanical ventilation of a lift station is required to:
• A pH of 7 is which of the following?
• Wire-to-water efficiency equals which product?
• Which statement about electrical work in a wastewater facility is true?
• Leakage of seal water around the packing on a centrifugal pump is required because it acts as a
• Which tool is NOT used with a power rodder?
• Sources of harmful radioactive isotopes in wastewater collection systems include:
• Which chemical is recommended for odor control in sewers?
• When selecting an emergency lighting unit, which factors should be considered?
• Which of the following best describes a lantern ring?
• If the drive motor shaft is turning but the bar screen rake is not moving, what is the most likely cause?
• Check valves are used on the discharge side of centrifugal pumps to
• Enclosed, open, and semi-closed are terms used for designation and selection of
• Which of the following is a type of shore?
• Which item is most important to check during a lift station alarm response at night?
• Disaster planning is useful in reducing confusion in the event of a disaster. Which option best reflects this idea?
• Under what condition should electrical work in a sewer system be performed?
• What prevents any solution or water from backing up into the chlorine line?
• In the sequence, what step follows ascertain cause?
• The gas most commonly associated with fresh wastewater is:
• A worker notices a necessary piece of equipment is defective and the current job must be finished soon. What should the worker do?
• What is the normal status for lift station electrical controls?
• Which of the following is not considered a confined space?
• Infiltration may result from
• In hydraulic cleaning documentation, which element should be recorded?
• When sewer line grades are too flat, the odor problem is most likely caused by decreased velocity, which result is produced?
• Litmus paper placed in an acidic solution turns which color?
• Getting the facts is the first step in what part of the process?
• Which statement about chlorine gas is true?
• In a lift station, which observation would most strongly indicate the lead pump is air-bound?
• Exfiltration in sewer systems refers to water that does what?
• There are two components involved with the managerial functions and reporting to a higher authority.
• In sewer maintenance, what device is used to push debris through a force main?
• Which factor should be considered when planning trench shoring due to vibration risk?
• Given the lift station data below, what is the most likely cause of the problem? Wet well inlet is normal for dry weather flow. Wet well is alternating between excessively high & low levels. Lead pump starts at right level, level continues to rise, pump stops at right level. Lead pump check valve arm remains stationary in lowered position when pump starts and stops. Lag pump check valve arm rises when lag pump starts and lowers when it stops. Force main pressure remains the same when lead pump runs, but increases when lag pump runs. Level drops when lag pump runs. Low-level pressure switch normal. High-level pressure switch normal. Electrical controls are all in automatic.
• Which device is commonly used to isolate a section of piping for maintenance?
• A Parshall flume is described as a Venturi-type device.
• What is used to remove grease?
• Which of the following is a property of chlorine gas?
• Which statement best describes alarm systems in a normally operating lift station?
• Which document provides 'right-to-know' information?
• Which device measures flow based on pressure difference across a constricted section?
• Which safety feature is essential around an open manhole to protect workers?
• A pH of 6.0 is which of the following?
• Which of the following is the standard gallons per hour equivalent for 1 cubic foot per second?
• Which of the following are reasonable objectives of a cost accounting program for a wastewater utility?
• Liners are installed in sewers to correct problems caused by
• Enclosed, open, and semi-closed are terms used for designation and selection of impellers.
• In handling a motor overheating and fire, what is the correct step immediately after shutting off power?
• A pump is delivering at less than the expected rate of discharge. What will not cause this to happen?
• The main reason for chlorinating wastewater in sewers is for ____ control
• Which task is least likely to be performed by collection systems personnel?
• Which treatment is ineffective for sewer odor control?
• The product of power factor and pump efficiency is used to determine which efficiency?
• Odor problems in sewers are not solved by which chemical option?
• All simple slope excavations 20 feet or less in depth shall have a maximum allowable slope of?
• Before installing or servicing electrical equipment, you should
• Chlorine cylinders should be stored
• Leakage of seal water around the packing on a centrifugal pump is required because it acts as a
• What is a key advantage of using video tape recording in sewer inspections?
• The gas most commonly associated with septic wastewater is
• Which action is a hallmark of an effective public relations program for a wastewater utility?
• What is the primary purpose of a mandrel in sewer work?
• Given the data for a second lift station, what is the most likely cause of the problem?
• To properly operate a power rodder, which of the following actions is recommended?
• Which statement best describes the pH value of 6.0?
• Which chemical may be used for odor control in sewers?
• Which safety practice is true before entering a manhole?
• What is the primary function of a check valve on a pump's discharge side?
• Which method is commonly used to detect improper connections in sewer systems?
• Improper connections can be detected through
• You should get out of a manhole as soon as you start feeling
• Shoring must protrude _____ above the top of the excavation?
• After completing a sewer cleaning job, which administrative action must you perform?
• Waste flowing at 15 percent of design flow through a 60-inch pipe interceptor may allow
• Emergency stoppages in pipelines may be cleared safely by use of which of the following?
• A lantern ring is a
• Which device measures flow by pressure difference across a constriction?
• Which rules apply to operation of gas or electric welding equipment?
• What will happen if the discharge valve on a centrifugal pump is partially closed?
• Flatter sewer line grades may cause added sewer maintenance expense and odor nuisance. The problem is most likely caused by
• What does pump efficiency measure?
• Which statement about the Wayne Sewer Ball is true?
• Which equipment is effective in removing an emergency stoppage?
• Your chlorinator room should have an exhaust vent installed
• Which of the following would be the best use of closed-circuit TV by wastewater collection system workers?
• Results obtained from pipe roughness coefficient tests can indicate whether or not:
• Which document provides health hazard information to employees under right-to-know provisions?
• You are notified that a semi-truck was involved in an accident 5 miles upstream from the treatment plant. Storm water inlets to the combined wastewater collection system are receiving a large quantity of an unknown chemical. What is the first action that would be taken?
• When responding to a lift station alarm, which item should be inspected?
• Flatter sewer line grades may cause added sewer maintenance expense and odor nuisance. The problem is most likely caused by
• On floors where water or chemicals are commonly spilled, cover the floors with
• What is the greatest distance between manholes for an 8-inch sewer line?
• Who is typically responsible for administering disciplinary action when an employee breaks the rules?
• Which term describes water entering a sewer from groundwater due to a high water table?
• Which value on the pH scale is acidic?
• Which of the following is the essential fourth condition for an explosion besides combustible gas, oxygen, and heat?
• Which statement correctly identifies a cutting blade used with a power rodder?
• Which of the following is not typical of a 'submersible' pump?
• In the sequence, what step comes after repair?
• A chlorine gas mask should be provided
• The purpose of ribs on the outside of a Wayne Sewer Ball is to:
• When litmus paper is placed in an acidic solution, which color does it take?
• Which inspection technology allows observation when the sewer camera is submerged?
• Hydrogen sulfide formation in a wastewater collection system is usually caused by which process?
• Employee hazards in collection system operations include which of the following?
• The temperature versus DO relationship for wastewater is such:
• Why are gasoline and volatile solvents objectionable when present in a sewer?
• The purpose of a lift station sign-in log is to
• Which method is best for recording all work performed?
• A Parshall flume is a type of
• Infiltration is caused by
• Which action should be performed first if an operator inhales chlorine gas?
• How can a closed circuit television unit with video tape help to evaluate the condition of a wastewater treatment system?
• Which statement describes a valid objective of cost accounting data in a wastewater utility?
• On floors where water or chemicals are commonly spilled, cover the floors with what?
• One of the electric motors in the facility has overheated and caught fire. Select the correct sequence of steps you would take.
• What is a mechanical means to remove material from a sewer?
• Which pH reading indicates an acidic wastewater?
• When an employee breaks the rules and requires discipline, who is responsible for administering it?
• Which factor is not a contributor to grease buildup in a sewer?
• When selecting pipe for acidic sewer conditions, which option is recommended?
• Gasoline and volatile solvents in a sewer are problematic primarily due to their potential to cause
• Which centrifugal pump component is the housing that contains the impeller?
• What is a potential use of a closed circuit television unit with video tape in wastewater collection systems?
• What is the purpose of ribs on the outside of a Wayne Sewer Ball?
• Biological hazards in collection system operations include which of the following?
• A pH of 6.0 is
• Which of the following is addressed by chlorinating wastewater to control odors?
• Pipe materials that are least susceptible to corrosion by acids formed by gases generated in sewers are
• In a sewer with long, sluggish-flow and flat grade, what is a likely consequence of biological activity on air quality?
• Which of the following is not a direct use of closed-circuit TV by wastewater workers?
• What type of pump is not seriously damaged if the discharge valve is closed for a short time while the pump is running?
• What is the greatest distance between manholes for an 8-inch sewer line?
• Staffing a new system should be viewed primarily as the function of which group?
• To reduce infiltration into the existing wastewater collection system, you should
• What is the primary purpose of a lantern ring in a pump packing gland?
• A chlorine gas mask should be provided just outside the chlorine room door.
• What device is used to test percent deflection in a sewer pipe between manholes?
• Engineer approval is required for trench shoring designs exceeding what depth?
• A device used to test the percent deflection in a sewer pipe between manholes is known as what?
• Which duty is included in the industrial waste section?
• If an operator inhales chlorine gas, which action would be performed first?
• At what trench depth must proper shoring be provided?
• Which tools are used with a power rodder?
• At what trench depth is proper shoring required?
• What is the minimum clearance required between the bottom of a water line crossing above a sewer and the crown of the sewer?
• A sewer-use ordinance should specify the personnel performing
• Which factor is the most common for generating hydrogen sulfide in sewers?
• Decentralization of the organization refers to which concept?
• A kilowatt is equivalent to which of the following?
• Wearing rings are installed in a pump to achieve what?
• If a pump is delivering less flow than expected, which condition is most likely the cause?
• Which of the following statements about kilowatts and horsepower is true?
• When a centrifugal pump's discharge valve is closed for a short time while running, which statement is true?
• Which test is performed with a mandrel during pipeline installation to assess deflection?
• Which device provides access to a pipeline for inspection and cleaning?
• Hz stands for... in electrical terminology.
• You should get out of a manhole as soon as you start feeling
• Emergency stoppages in pipelines may be cleared safely by use of
• Lift station failures include ________ failure.
• Decentralization of the organization refers to which concept?
• Why might a lack of odor in a manhole not guarantee safety?
• What is the most widely used prime mover in pumping plants?
• In sewer construction, a mandrel is used to check for deflection in pipes.
• When curing a concrete slab, which tool is used to compact the concrete and bring a cement film to the surface for finishing?
• Which of the following is NOT considered when clearing a stoppage in a sewer?
• After completing a sewer cleaning job, which task is not necessary to perform at the manhole?
• Which task is least likely to be performed by wastewater collection systems personnel?
• Which factor is most specifically recommended to consider for trench shoring because of vibration risk near trenches?
• Using water on a gas chlorine leak will?
• Of the following, which is not effective for eliminating sewer odors?
• A mandrel is employed to verify a pipe's ability to resist deformation under standard conditions.
• Which is the safest action to take in the event of a major chlorine container leak?
• A mechanical ventilation system for the wet well portion of a lift station which operates continuously should be able to exchange the air in the wet well ______ times an hour.
• What is the fourth condition required for an explosion in a sewer when combustible gas, adequate oxygen, and sufficient heat are present?
• Hydrogen sulfide is a toxic gas that smells like ______. At high concentrations, however, the sense of smell is deadened
• One cubic foot per second flow is equal to ____ gallons per hour?
• Which item is commonly used with a power rodder to address sewer blockages?
• Which option will not solve an odor problem in a sewer?
• What is the most important reason for washing hands after taking a wastewater sample?
• If a rod breaks during operation, what safety step should be taken before handling it?
• What is the purpose of the minimum scouring velocity value in sanitary mains?
• Which outcome is most directly associated with decreased velocity in sewer lines?
• Disaster planning is best described as which of the following?
• A Parshall flume is a type of
• Which pipe material is most suitable in acidic sewer conditions?
• As the impeller wears on a pump, the pump efficiency will
• Right-to-know legislation requires information about possible health effects from contact with what?
• Which one of the following is a property of chlorine gas?
• At low flow through a 60-inch pipe interceptor, which condition might occur?
• Which gas in sewer spaces is known for its rotten-egg odor and toxicity?
• Before any excavation, which agency must be notified?
• Motor efficiency is defined as the ratio of what?
• An engineer must approve any trench shoring design above which depth?
• What is a mechanical means to remove material from a sewer?
• When opening a power rodder properly, do the following?
• Following completion of a sewer cleaning job, which action must be performed at the manhole?
• Which statement best describes the policy for keeping records in wastewater operations?
• Which agency must be notified prior to excavation?
• The most important reason for washing hands thoroughly after taking a wastewater sample is to
• Grease removal methods include which of the following options?
• Wearing rings in a pump serves to
• Who must review plans for final approval before a new sewer can be constructed?
• What term describes how closely a measurement matches the true value?
• What must be checked before entering a manhole?
• When opening a power rodding properly, do the following
• Before entering a manhole, which action is essential regarding the atmosphere?
• Sewers located adjacent to a ground storage reservoir are required to be located at least 10 feet from the structure and be constructed of water main type materials for a distance of at least 50 feet from the storage reservoir. What is the reason for this requirement?
• Which pipe material is least susceptible to corrosion by acids formed by gases generated in sewers?
• What is the correct volume formula for a rectangular wet well?
• In order to budget a certain number of personnel, an operator should know the amount of 'backlog' work, the rate at which it increases, and how to apply ______ to determine total
• During manhole inspections, which items are commonly checked to ensure access safety?
• What factor must be considered when obtaining an easement for construction and maintenance of a collection system?
• Which statement correctly describes the pH of acidic wastewater?
• In odor management, which would not reduce sewer odors?
• Which gas is commonly produced in septic wastewater?
• Which problems can affect a sewer camera’s image, including deep water, lens fogging, and offset joints?
• Keeping sewer maps up-to-date is important for several reasons. Which of the following is the least appropriate reason?
• How can members of a bailing crew communicate with each other?
• Dissolved oxygen in water is most influenced by temperature; as temperature rises, DO tends to
• What is a mechanical means to remove material from a sewer?
• Which statement accurately reflects lift station alarm procedures?
• You should never attempt to install, troubleshoot, maintain or replace electrical equipment panels, controls, wiring or circuits unless
• How does an emergency service crew try to remove a stoppage?
• Hydrogen sulfide gas smells like which of the following?
• Which item is not listed as a possible lift station failure?
• What tools are used with a power rodder?
• In a trench where a ladder is required, the maximum distance to reach the ladder is 25 feet. Which option correctly represents this distance?
• Which is the most important traffic safety consideration when performing sewer work?
• In acid-bearing sewer networks, which material is preferred?
• Which items should be inspected when responding to a lift station alarm at night?
• Biological activity in long, sluggish-flow, flat grade sewer lines will likely cause which problems?
• If flow is 0.5 cubic feet per second, approximately how many gallons per hour is produced?
• The flushing water pressure in a water-lubricated wastewater pump should be how relative to the pump discharge pressure?
• Grease in sewers is mechanically removed by which method?
• In sewer maintenance, a pig is defined as
• Velocity may be sensed in which ways?
• Sources of excessively clear water in a sewer collection system include which of the following?
• When should a pH meter be standardized to ensure accurate readings?
• In piping, what does Schedule 40 primarily indicate?
• The purpose of a lift station sign-in log is to
• The electrical disconnect for a pumping station motor can trip out under which one(s) of the following:
• Which statement reflects proper practice for keeping records in annual reporting?
• Which issue commonly causes pump vibration?
• Duties assigned to an industrial waste section include which of the following?
• Important considerations when reviewing the plans for a lift station include?
• Which expression represents the volume of a cylinder using diameter D and length L?
• At a pumping station equipped with centrifugal pumps, what caused the discharge pressure to suddenly increase and the discharge quantity to suddenly decrease?
• Which formula correctly expresses the relationship between wire-to-water efficiency and its components?
• A kilowatt (KW) is equivalent to
• In pipeline installation, which test is used to evaluate pipe deflection when using a mandrel?
• Which operation removes material from a sewer by cutting through debris and solids?
• A rattling noise coming from the lead pump most likely indicates which condition?
• Which gas is most commonly associated with septic wastewater?
• After a collection system problem has been solved, which action should you take?
• If a bad odor around a catch basin persists with the trap and water level in good order, what is the proper next step?
• The purpose of ribs on the outside of a Wayne Sewer Ball is to
• Which tool is used for sewer rodding?
• Infiltration may result from
• Mechanical ventilation of a lift station is required to
• Which managerial function includes guiding, teaching, motivating, and supervising treatment plant shift operators?
• Which fault is most likely if the lead pump amperage is lower than normal and the water level continues to rise after startup?
• Which items should be inspected in manholes?
• Biological activity in long, sluggish-flow, flat-grade sewer lines will likely
• Why must you always know where a cleaning tool is in the sewer?
• The sign-in log for a lift station serves primarily to:
• Hydrogen sulfide is a toxic gas that smells like ____. At high concentrations of hydrogen sulfide, however, the sense of smell is deadened and no odor is detected.
• What is the minimum distance from the edge of the spoils to the edge of the trench?
• Check valves on the discharge side of centrifugal pumps serve to
• In a lift station with three pumps, where pump #1 check valve is stuck open, which condition is most likely the cause?
• What tools are used with a power rodder?
• What is not the cause of grease buildup in a sewer?
• Enclosed, open, and semi-closed are terms used for the designation and selection of
• Which of the following items should be inspected when responding to a lift station alarm at night?
• How far in advance must O.U.P.S. be notified before a sewer excavation begins?
• In sewer maintenance, what is a pig?
• Any excavation over ______ must have a ladder for the worker to get in and out of the trench?
• Roots enter collection systems through which of the following paths?
• In sewer maintenance, what is a pig?
• Rodents and insects can be controlled by
• Employee hazards in collection system operations include which of the following?
• Wearing rings in a pump is intended to
• A venturi meter measures quantity of fluid by
• Which statement identifies a cutting blade used with a power rodder?
• “Schedule 40” refers to pipe
• Which of the following factors affects the flow capacity of an installed sewer line?
• In the same sequence, what step comes after tagging and locking out power?
• What information would you consider while clearing a stoppage in a sewer?
• Which option best describes what Schedule 40 specifies for pipes?
• Where should the exhaust vent be located in a chlorinator room?
• If a centrifugal pump has a discharge head that is too high, what is the effect on the discharge rate?
• Important traffic safety considerations include
• If the drive motor shaft is turning but the bar screen rake is not moving, which component is most likely damaged?
• Which of the following should be inspected when responding to a lift station alarm?
• To sample for pH, you should collect a
• Long, sluggish-flow, flat-grade sewer lines will likely cause which of the following?
• Which of the following is an accepted means for applying herbicides to control roots in wastewater collection?
• When packing a centrifugal pump, the packing gland should be tightened
• A pH neutral is achieved at which value?
• Which components can serve as entry points for infiltration into a wastewater collection system?
• During sewer camera operation, which problem can affect image clarity due to moisture or temperature?
• Which tool is not typically used for sewer rodding?
• A task least likely to be performed by collection systems personnel is
• What should be your most important concern after a chemical spill?
• The amount of oxygen that may become dissolved in a given amount of water is most related to
• Which of the following is a centrifugal pump part?
• Check valves are used in connection with centrifugal pumps in order to
• Which statement is true about odor control in sewers?
• The minimum scouring velocity normally used for sanitary collection lines is
• What information must be on a warning tag attached to a switch that has been locked out?
• For any CSO outfall pipe, which of the following is required?
• What information should be considered when clearing a sewer stoppage?
• Which of these chemicals should be used for odor control in sewers?
• Mechanical ventilation of a lift station is used primarily to ensure safe working access.
• Which of the following is NOT a factor to consider when selecting an emergency lighting unit?
• For sewer flows containing sulfuric acid, which pipe material is best?
• Centrifugal pump parts include
• Which of the following is a type of shore?
• Which term best describes the total amount of work yet to be completed in a maintenance backlog?
• Which chemical may be used for odor control in sewers?
• Tools used for sewer rodding include all but the
• The ribs on a Wayne Sewer Ball primarily facilitate which effect?
• Which task is performed by a collection system operator?
• As the impeller wears, how does pump efficiency change?
• When sewer line grades are too flat, an odor problem is likely to result. The most likely cause of the odor problem is deceased velocity, which
• The minimum scouring velocity normally used for sanitary collection lines is
• Which material resists sulfuric acid best for sewer lines?
• Which of the following is a biological hazard in collection system operations?
• According to Ten State Standards, when a sewer is installed parallel to a water line, what is the minimum distance away measured from the outside diameters?
• When a fire hydrant is opened, it should be:
• During a lift station alarm response, which item is commonly inspected?
• In sewer maintenance, what is a pig?
• Which option best describes what is included in end-of-job street maintenance after sewer work?
• In piping standards, Schedule 40 primarily indicates which characteristic?
• One cubic foot per second flow equals how many gallons per hour?
• Right-to-know information is provided by which document?
• The primary safety reason for washing hands after collecting wastewater samples is to prevent exposure to:
• Emergency stoppages in pipelines may be cleared safely by use of
• What is the primary function of keeping records?
• A pump is delivering less than the expected rate of discharge. Which condition is most likely causing this?
• Roots can enter collection systems through
• Yokes, rollers, jacks, swivels, pull in machine and loader are accessories used in
• Leakage of seal water around the packing on a centrifugal pump is required because it acts as a
• Which source is a source of excessively clear water in a collection system?
• You should get out of the manhole as soon as?
• In long, sluggish-flow lines, biological activity is likely to cause which of the following conditions?
• Shoring must protrude above the top of the excavation by how many inches?