CWEA Collections Grade 2 Practice Test. Complete Exam Questions with Correct Verified Solutions. Newest 2025/2026 UPDATE. A+ GRADED

CWEA Collections Grade 2 Practice Test. Complete Exam Questions with Correct Verified Solutions. Newest 2025/2026 UPDATE. A+ GRADED 1. In order to accurately estimate the flow of a sanitary sewer overflow (SSO) you must have: - ANSWER Spill start time, spill end time and spill rate 2. Providing a plan and schedule to properly manage, operate and maintain all parts of the sanitary sewer system is the goal of a: - ANSWER A sewer system management plan (SSMP) 3. What are the basics elements of a safety program? - ANSWER Safety policy, statement, safety training, accident investigation 4. What factor must be considered when obtaining an easement for construction and maintenance of a collection system? - ANSWER Access for equipment and personnel 5. As the division manager you receive a request from your board or council, and they want an immediate response. You do not know all the answers you should: - ANSWER Respond with the information available and update them with more 6. If you were a supervisor of two lead workers, one whose work was exceptionally good and a second whose work was substandard, what should you do? - ANSWER Discuss the problem with the substandard foreman and offer to help before any other action is taken 7. In selecting pipe material for maximum service life which factor is more important? - ANSWER Life expectancy of pipe 8. What affects the flow capacity of a sewer line? - ANSWER Pipe size, pipe, material, grade 9. When a grade conflict exists between a Water main and a sewer main, which of the following is the best solution? - ANSWER Have the Water main adjusted and hold the grade on the sewer main 10.Why is the replacement of wastewater collection systems in some downtown streets difficult? - ANSWER Crowding of other underground utilities. 11.Under what conditions must each member of the rescue service practice permit space rescues? - ANSWER At least once a year in simulated situation using non-representative space conditions 12.If the camera becomes wedged during a video inspection, which of the following would be your first step in solving the problem? - ANSWER Attempt to free the camera with the tag line. 13.Drawings which are considered "As Built" would be? - ANSWER Corrected construction drawings showing changes made in the field installation. 14.Legally Responsible Officials are required to report category 1 sanitary sewer overflows: - ANSWER Within 2 hrs. 15.Span & Control relates to the number of subordinates who can be supervised effectively by one supervisor. At the top level of organizations, what is this number? - ANSWER 9 to 11 16.What is the best approach to take when handling on-the-job conflicts? - ANSWER Communicate clearly without attacking the other person or personalizing the conflict 17.What tools are used with a power rodder? - ANSWER Spring blades 18.Tools used for sewer rodding do not include the: - ANSWER Lag screw 19.What items would you consider when selecting a solution to clear a stoppage in a sewer? - ANSWER Cause of stoppage 20.The lowest point on the inside of a pipeline is called the: - ANSWER Invert 21.Emergency stoppages in pipelines may be cleared safely by use of: - ANSWER High velocity cleaners (HVC) 22.Based on new best practices of the common ground alliance for marking underground utilities, the inquiry identification number for an underground service alert (USA) is viable for: - ANSWER 28 days 23.After completing a temporary traffic control setup for your work zone it is a good practice to: - ANSWER Observe how effective your TTC setup is working to control traffic and make the necessary changes to it if necessary. 24.Explosive or flammable atmospheres can develop _____________ in the collections system? - ANSWER At any time 25.The proper testing sequence for atmospheres in confined spaces is? - ANSWER Oxygen content, combustible gases and toxic gases 26.Employees whom in the course of their job, maybe required to wear respirators must be certified medically fit. - ANSWER Annually 27.You are working inside a pump station with a crew performing some technical and hazardous maintenance. Suddenly an accident occurs that causes severe injuries to one operator. What do you do first? - ANSWER Send for help and check and /or restore breathing 28.In the wastewater industry we find confined spaces everywhere. What would make a routine confined space turn into a "permit required" confined space? - ANSWER Any work that may change the air quality 29.It is unfortunate that in the wastewater industry most of our injuries are to what part of the body? - ANSWER Head and Back 30.Hydraulic cleaning methods consist of cleaning a sewer with: - ANSWER Water under pressure that produces high water velocities 31.There are _____ different areas of traffic zones when working in roadways? - ANSWER Four 32.Before starting a maintenance operation in an easement located in a backyard of a residence you should? - ANSWER Contact the resident, and politely ask for permission to enter the backyard. 33.If a ticket is called into Dig Alert on Friday at 8am, when is the earliest you can dig? - ANSWER Wednesday 8am (the day you call does not count) 34.Personnel entering a Permit Required Confined Space must have the following training? - ANSWER Entry and rescue procedures 35.Four conditions are necessary to create an explosion. Three of these conditions are combustible gas, adequate oxygen and sufficient heat. What is the fourth? - ANSWER Proper mixing of gas and oxygen 36.Flatter sewer line grades may cause added sewer maintenance expense and order nuisance. The problem is most likely caused by? - ANSWER A decrease in velocity allowing gases to be released from the wastewater 37.How often must an excavation site and adjacent areas be inspected for hazardous conditions? - ANSWER Daily 38.Protective shoring systems options include all but: - ANSWER Working in an un-sloped trench with no shoring 39.Sewer testing methods do not include: - ANSWER Sewage 40.When a citizen wants information regarding a maintenance operation you should? - ANSWER Give them as much factual information as you can, and offer to help them further. 41.Maintenance programs are based on? - ANSWER Preventive and corrective maintenance principles 42.The goal of preventative maintenance is to? - ANSWER Avoid breakdowns, severe damage, or harmful depreciation 43.Equipment and traffic conditions frequently require ______ driving skills just to get to the job site: - ANSWER Extraordinary 44.The state of California required that all employers have a written: - ANSWER Injury and illness prevention plan 45.Employers must have an active safety program. Two very important aspects of this plan should be, routine safety meetings, and ? - ANSWER Get all employees to have proper safety attitude 46.Cal/OSHA law requires that any vertical walled trench over ____ shored., also requires that the spoil be placed no closer than ____ from the trench. - ANSWER 5/2 47.When working with pumps or other electrical machinery we are required to follow strict lockout requirements. One of the last requirements just before beginning to work is to? - ANSWER Try to start the equipment 48.When working with confined spaces it is critical to remember that all confined spaces are to be considered "permit required" confined spaces until? - ANSWER Pre entry checks show otherwise 49.Illegal or incorrect connections results from improper? - ANSWER Enforcement of service connection 50.Infiltration is detected by? - ANSWER Dye testing 51.Inflow is detected by? - ANSWER Smoke testing 52.The underside of a manhole lid can? - ANSWER Harbor dangerous insects 53.An advantage of a CCTV system is the ability to? - ANSWER Record infiltration water flow in action 54.One method of televising through flooded low spots or a dip in a sewer line is to? - ANSWER Use a high velocity cleaner to push water clear of dip 55.The purpose of forcing air into the sewer system when smoke testing is to? - ANSWER Get an air flow established 56.Lamping is a technique used to? - ANSWER Determine if a sewer line is straight and clear of obstructions 57.If a stoppage occurs below a sewer ball, it must be cleared as soon as possible to avoid? - ANSWER Flooding homes and/or streets 58.To find proper protective gear before application of a product, you would? - ANSWER Look at the material safety data sheet (MSDS) 59.The gas most commonly associated with septic wastewater is? - ANSWER Hydrogen sulfide (H2S) 60.The oxygen level alarm in a gas detection meter normally set to go off at oxygen levels below? - ANSWER 19.5% 61.What are the requirements for a Class B license? - ANSWER Vehicle weight more than 26,000 Is 62.What is the one thing you don't have to check on a pre-trip inspection? - ANSWER Fuel 63.Which of the following would you check in your pre-trip first? - ANSWER Gear box low oil 64.What check should be performed before driving a vehicle? - ANSWER Mechanical/Safety 65.Wastewater collections systems are built to? - ANSWER Carry away wastewater from homes and industries 66.What are the main purpose of Manholes? - ANSWER To access sewers 67.What is the minimum size cone that can be used in a 25mph or 35mph zone? - ANSWER 18" 68.If the soil has a compressive strength of .05 or less it is considered? - ANSWER Туре B 69.If the soil strength is greater than .05 tsf but less than 1.5 tsf or has angular gravel, you have what type of soil? - ANSWER B 70.What does PVC stand for? - ANSWER Polyvinylchloride 71.CIWQS stand for: - ANSWER California Integrated Water Quality System 72.What would be the ideal sewer lateral connection to a sewer mainline? - ANSWER Wye 73.How long is a Dig Alert ticket valid for (after which it is expired)? - ANSWER 28 days 74.What degree of nozzle jet would an operator use to jet clean up a steep grade? - ANSWER 15% 75.According to OSHA standard, how far from the edge of an open excavation trench should spoils piles be placed? - ANSWER 2ft. 76.What is the main oblective of cleaning collection systems? - ANSWER Prevent blockages and overflows 77.What normal flows are recommended to reduce buildup of materials and will carry normal solids? - ANSWER 2 fps 78.The State Wide General Waste Discharge Requirements affect which of the following: - ANSWER All owners of operations of sanitary sewer systems greater than 1-mile in length 79.SSO Reports shall be kept on file for how long? - ANSWER 5 years 80.SSO stands for: - ANSWER Sanitary Sewer Overflow 81.I/l stands for; - ANSWER Inflow / Infiltration 82.VCP stands for: - ANSWER Vitrified Clay Pipe 83.A Cast-in-Place manhole base is one that: - ANSWER the concrete is poured and the base is formed in the field 84.A rigid pipe will: - ANSWER Break or crack if not supported properly 85.What is the least effective way of cleaning grease: - ANSWER Bucket Machine 86.Which testing method is not recommended for identifying I/I & Exfiltration for manholes: - ANSWER Air/Water test 87.A Mandrel is a: - ANSWER testing device used to measure for excessive deflection in a flexible conduit. 88.Why are gasoline and volatile solvents objectionable when present in a sewer? - ANSWER They produce an explosion hazard 89.You should never attempt to install, troubleshoot, maintain, repair or replace electrical equipment panels, controls, wiring or circuits unless: - ANSWER you know what you are doing, are qualified, and are authorized. 90.Why should hydrogen sulfide be controlled: - ANSWER to protect sewers and structures from corrosion. 91.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: - ANSWER some dangerous gases have no odor. 92.What does "transition area" mean in traffic control? - ANSWER Moves traffic out of its normal path 93.Why are gasoline and volatile solvents objectionable when present in a sewer? - ANSWER They produce an explosion hazard 94.You should never attempt to install, troubleshoot, maintain, repair, or replace electrical equipment unless: - ANSWER You know what you are doing, are qualified, and are authorized. 95.How many different areas of traffic zones are there when working in roadways? - ANSWER Five 96.Why should hydrogen sulfide be controlled? - ANSWER To protect sewers and structures from corrosion 97.Personnel entering a Permit Required Confined Space must have the following training: - ANSWER Entry and rescue procedures 98.To find proper protective gear before application of a product, you would: - ANSWER Look at the MSDS (Material Safety Data Sheet) 99.The gas most commonly associated with septic wastewater is: - ANSWER Hydrogen Sulfide (H2S)