Wastewater Collector Class D License Exam Questions and Answers Latest 2024/2025 (100% Correct)

Wastewater Collector Class D License Exam Questions and Answers Latest 2024/2025 (100% Correct) I & I causes hydraulic overload on wastewater lines, lift stations and the wastewater treatment plant. a. true b. false a. true I & I, (Inflow & Infiltration) causes hydraulic overload to wastewater lines, lift stations, and treatment plants. 2. When the treatment plant is overloaded, the bypassed, spilled or under–treated wastewater pollutes rivers and streams. a. true b. false a. true Wastewater Collector Class D License Exam Questions and Answers (100% Correct) Latest 2024/2025 3. I & I and exfiltration results from poor construction or design, cracked pipe or improper taps and illegal connections. a. true b. false a. true and can be caused by: * poor design * wasterwater line deterioration *Cracked Pipe or improper taps *Illegal connections 4. Some illegal connections are rain gutter downspouts, yard drains and storm sewer taps. a. true b. false a. true 5. When televising, the pipe is cleaned, then a camera is pulled through the line and the interior is viewed on a remote screen. a. true b. false a. true Televising a form of S.S.E.S. (Sewer System Eval Survey) 6. Smoke testing indicates infiltration and illegal connections to the system. a. true b. false a. true 7. Notify the public by radio or television prior to smoke testing. a. true b. false a. true 8. Do not smoke test on a windy or rainy day. a. true b. false a. true 9. Record smoke coming from the ground, houses or buildings and include landmarks in photographs. a. true b. false a. true 10. About 15% of emergency repairs are eliminated by cleaning collection lines. a. true b. false b. false Its 85% of emergency repairs. 11. The primary cause of collection line stops is poor construction, age or corrosion, public abuse or bricks, wood and sand. a. true b. false b. false The primary causes of collection line stops are: Roots and Grease Public Misuse Poor Design Defective Meaterials 12. The best way to control grease is to collect it at the treatment plant. a. true b. false b. false The best way to control grease is to collect it at the source. 13. Rodders push, pull or rotate end–attachments to loosen debris, cut roots or break up grease. a. true b. false a. true 14. A fishing pole removes the rod line should it break or disconnect. a. true b. false b. false A rod Pickup tool fishes out the rod line, should it break or disconnect. 15. Operate hydraulic jets carefully to prevent water from entering wastewater lines or manholes.