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CWEA Collections Grade 3 Exam 2025 /
Questions and Verified Answers| 100%
Correct| A Grade
QUESTION
Which unit uses high water pressure and a vacuum to clean sewer lines? a. Jetter b. Mechanical rodder c. Combination unit d. Bucket machine Answer: c. Combination unit
QUESTION
In sewer maintenance, what is a pig? a. A ball forced through a sewer line. b. A power rod. c. Any foul smelling equipment. d. The hydraulic rodding truck. Answer: a. A ball forced through a sewer line.
QUESTION
When pouring a concrete slab, which of the following tools is used to finish the concrete? a. Grasshopper. b. Tamper. c. Trowel. d. Vibrator. Answer: c. Trowel.
QUESTION
What tool is used to snare a broken section of sewer rod? a. Square stock corkscrew. b. Auger. c. Pickup tool. d. Pull out tool. Answer: c. Pickup tool.
QUESTION
Why is the replacement of wastewater collection systems in some downtown streets difficult? a. Crowding of other underground utilities. b. Records have not been maintained properly and the collection system is lost. c. Some people have landscaped their backyards over the collection system and do not want their yards dug up. d. The streets will have to be paved again Answer: a. Crowding of other underground utilities.
QUESTION
How can the velocity of water flowing in a sewer be estimated? a. Driving between manholes and reading the speedometer. b. Measuring the Manning's roughness coefficient for the sewer. c. Measuring the time it takes for the dye to be carried by the wastewater between the two manholes. d. Measuring the time it takes to run between the two manholes. Answer: c. Measuring the time it takes for the dye to be carried by the wastewater between the two manholes.
QUESTION
Drawings which are considered "As Built" would be?
Answer: c. oxidizing sulfide compounds.
QUESTION
Construction of a wastewater pipeline under a highway or railway without disrupting the traffic is done by? a. Drag lining. b. Dredging. c. Embankment excavation. d. Boring and jacking. Answer: d. Boring and jacking.
QUESTION
When a grade conflict exists between a water main and a sewer main, which of the following is the best solution? a. Build a manhole around the sewer main and continue the water main through the manhole. b. Drop the sewer service under the water main and let it work like a siphon. c. Have the water main adjusted and hold the grade on the sewer main. d. Raise the sewer over the water main and install a sewer pump station. Answer: c. Have the water main adjusted and hold the grade on the sewer main.
QUESTION
Which chemical may be used for odor control in a sewer system? a. Calcium chloride b. Hydrogen peroxide c. Oxidized aluminum d. Sodium chloride Answer: b. Hydrogen peroxide
QUESTION
What information must be on a warning tag attached to a switch that has been locked out? a. Directions for removing tag. b. Name of nearest physician to call in case of emergency. c. Signature of person who locked out switch and who is the only person authorized to remove tag. d. Time to unlock switch. Answer: c. Signature of person who locked out switch and who is the only person authorized to remove tag.
QUESTION
Under what conditions must each member of the rescue service practice permit space rescues? a. At least once a year in a simulated situation or by the satisfactory performance of an actual rescue. b. At least twice a year in simulated situations. c. At least once a year in simulated situation using non-representative space conditions d. At least four times a year. Answer: a. At least once a year in a simulated situation or by the satisfactory performance of an actual rescue.
QUESTION
How is a permit-required space described? a. Has or may contain atmospheric, engulfment, design, or other serious health/safety hazard. b. Is large enough to enter and work in and is meant for continuous occupancy. c. Is large enough to enter and work in and has an unrestricted entry/exit. d. Never contains an atmospheric or engulfment hazard. Answer: a. Has or may contain atmospheric, engulfment, design, or other serious health/safety hazard.
QUESTION
Answer: d. any SSO which is not category 1.
QUESTION
Which tool would you use for cleaning under a pipe, or hard dirt near a pipe? a. Miner's pick. b. Wrench. c. Drill. d. Hammer. Answer: a. Miner's pick.
QUESTION
A torque wrench is used to tighten which device? a. Pipe clamp. b. Drill chuck. c. Light bulb. d. Sheet metal screw Answer: a. Pipe clamp.
QUESTION
The reason newly constructed collection system sewers should be inspected is to: a. determine if the contractor has complied with plans and specifications. b. determine if smoke tests will be successful. c. determine if dye tests will be successful. d. determine if the streets are paved. Answer: a. determine if the contractor has complied with plans and specifications.
QUESTION
A source of infiltration in a collection system is: a. new pipes. b. proper joint pipes. c. pipe liners d. broken pipe joints Answer: d. broken pipe joints
QUESTION
What are the advantages of a video tape recording system? a. Cheaper than a Polaroid camera. b. Record and play private video tapes. c. The ability to see what's happening when the camera is underwater. d. The length and severity of defective areas that can be recorded for later study. Answer: d. The length and severity of defective areas that can be recorded for later study.
QUESTION
Before conducting smoke testing you should: a. warn the public after smoke testing is completed. b. notify local police and fire departments only if a fire is started. c. notify local animal control departments in advance of testing. d. notify public, local police, and fire departments in advance of testing. Answer: d. notify public, local police, and fire departments in advance of testing.
QUESTION
Manholes are installed in sewer lines for the access of: a. backflow devices. b. personnel and materials c. traffic control devices.
QUESTION
Liners are installed in sewers to correct problems caused by: a. grade alignment. b. grease. c. grit. d. infiltration. Answer: d. infiltration.
QUESTION
A kilowatt is the equivalent of: a. 0.67 amperes at a voltage of 120. b. 1.34 horsepower. c. 746 watts. d. 1,000 megacycles. Answer: b. 1.34 horsepower.
QUESTION
What factors should be considered when providing trench shoring? a. Grade of sewer. b. Pipe material. c. Structures or sources of vibration near trenches. d. Cost of shoring. Answer: c. Structures or sources of vibration near trenches.
QUESTION
When sewer line grades are too flat, an odor problem is likely to result. The most likely cause of the odor problem is decreased velocity which:
a. allows decomposable solids to settle. b. decreases the treatment time in the lines. c. increases the treatment time of inorganic solids. d. allow decomposable solids to be suspended. Answer: a. allows decomposable solids to settle.
QUESTION
After a collection system problem has been solved, you should: a. wait until next week to fill out the report forms. b. take a break. c. go home. d. evaluate the effectiveness of the results. Answer: d. evaluate the effectiveness of the results.
QUESTION
Improper connections can be detected through: a. DO tests. b. soundings. c. TV inspection. d. radar. Answer: c. TV inspection.
QUESTION
A Flagger should Stand? A. On the shoulder adjacent to traffic being controlled B. In the closed lane before stopping vehicle traffic C. In the traffic lane. D. As stated in "A" or "B" above.
When testing a manhole for explosive gases when should the first tests be made? a. After removing the manhole cover b. Before removing the manhole cover c. At any time d. After ventilation Answer: b. Before removing the manhole cover
QUESTION
Atmospheric hazards encountered in manholes can include: a. non-explosive atmospheres. b. non-toxic atmosphere. c. lack of oxygen. d. non-flammable atmospheres. Answer: c. lack of oxygen.
QUESTION
When setting up to ventilate a manhole, the air inlet should be how many feet above street level? a. 4. b. 3. c. 2. d. 1. Answer: c. 2. Extra Questions *without answers *
QUESTION
Which of these pH readings indicates an acidic wastewater? a. 3 b. 12 c. 7
d. 9
QUESTION
The record log of hydraulic cleaning operation should include: a. type and amount of material removed from downstream manhole. b. feet of rod used. c. camera malfunctions. d. feet of cable used.
QUESTION
To test for pipe deflection and joint offset, you would conduct which of the following tests? a. Smoke. b. Air. c. Mandrill. d. Water.
QUESTION
While the CCTC is being pulled through the line, the: a. camera must never stop. b. camera should be forced through any obstruction. c. operator must never stop looking at the monitor. d. operator must never use a tag line.
QUESTION
If the camera becomes wedged during a video inspection, which of the following would be your first step in solving the problem? a. Dig up the area where the camera is wedged. b. Attempt to free the camera with the tag line. c. Attach pull cable to a backhoe and pull is out. d. Wait awhile to see if it will free itself.
QUESTION
A Category 1 SSO is: a. any volume reaching surface waters. b. any volume entering a storm drain and not recovered. c. any spill greater than 1000 gallons. d. all of the above.
a. Stuffing box b. Lantern ring c. Impeller d. Bearings
QUESTION
What is a typical bubbler type controller failure? a. Air compressor failed b. Broken float line c. Short in electrode leads d. Electrode coated with grease
QUESTION
What is the most common type of pump used in lift stations? a. Piston b. Ejector c. Centrifugal d. Diaphragm
QUESTION
Vibrations in pumps may be caused by improper motor-pump: a. alignment. b. curves. c. piping. d. power factor.
QUESTION
What type of pump is not seriously damaged if the discharge valve is closed for a short time while the pump is running? a. Centrifugal pump. b. Diaphragm pump. c. Piston pump. d. Plunger pump.
QUESTION
A mechanical ventilation system in a lift station wet well should be able to exchange the air in the wet well how many times an hour? a. 10
b. 20 c. 30 d. 60
QUESTION
A pump is pumping less than its expected rate of discharge. What could be the cause? a. Speed of motor too high. b. Pump is primed. c. Impeller clogged. d. Discharge head too low.
QUESTION
A maintenance budget: a. is not concerned with capitol replacement. b. does not consider equipment-operating conditions. c. must be justifiable. d. does not relate to future needs.
QUESTION
Which of the following governs employee behavior? a. Unions b. Rules prepared by the manager c. The grapevine d. The buddy system
QUESTION
A good manager: a. sets goals. b. waits for an emergency to happen. c. resists changes. d. blames others for his mistakes.
QUESTION
Planning which covers a period of five to fifteen years is called: a. scheduling. b. long range. c. updating. d. future modeling.
QUESTION
What are the four major types of records a utility must maintain? a. Equipment/maintenance, operations, procurement/inventory, personal. b. Equipment/maintenance, operations, procurement/inventory, personnel. c. Equipment/maintenance, operations, credit, personal. d. Equipment/maintenance, sales, procurement/inventory, personal.
QUESTION
Behavior that is considered sexual harassment is: a. invited, annoying, offensive, humiliating, hostile. b. non-hostile, invited, annoying, offensive, humiliating. c. uninvited, hostile, annoying, offensive, humiliating. d. uninvited, hostile, annoying, defensive, non-humiliating
QUESTION
What is the best approach for field personnel to handle complaints from citizens? a. Be trained to handle the more common ones and report the others to supervisors b. Refer all complaints to the manager's office c. Handle only if the time permits d. Ignore them
QUESTION
Public relations are important because we: a. like our jobs. b. need lots of training. c. want to finish our work in a hurry. d. work for the public.
QUESTION
Staffing a new system should be viewed primarily as the function of: a. every operator. b. personnel department. c. the employee. d. the supervisory management.
QUESTION
Decentralization of organization refers to? a. Nominating new supervisors.
b. Looking at all positions, and possibly redelegating authority. c. Firing all employees and hiring new ones. d. Eliminating some departments.
QUESTION
What do organization charts represent? a. How the collection system structures are organized. b. How to locate sewers. c. The structure of an agency. d. The way to select solutions to problems.
QUESTION
While evaluating an applicant for employment, which one of the following may enter into your decision? a. Age b. Education level c. Minority classification d. Gender
QUESTION
The best way to record all work is done through a: a. closed circuit TV. b. Polaroid system. c. tape recorder. d. work order system
QUESTION
The most important function of record keeping is: a. record how much money was budgeted and how much was spent. b. record the past and provide a sound basis on which to plan the future. c. record what was done and when it was done. d. record where the company has been, and how they got where they are today.
QUESTION
What should financial management provide for a collection system? a. Capital improvement funds, careful budgeting, financial stability. b. Careful budgeting, financial stability, prudent investment of financial reserves. c. Careful budgeting, financial stability, lowest possible bond rates.
