Cwea Collections System Maintenance Grade 3 | 82 Questions With 100% Correct Answers

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. {Ans: }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. {Ans: c. Measuring the time it takes for the dye to be carried by the wastewater between the two manholes.}What is an important element of hydrogen sulfide production? a. Flow velocity. b. Pipe materials. c. Amount of odor present. d. Amount of inorganic materials. {Ans: a. Flow velocity.}Where is a check valve for a lift station pump installed? a. Between the discharge isolation valve and the discharge port of the pump. b. Between the suction isolation valve and the line through the wet well wall. c. Between the suction port of the pump and the suction isolation valve for the pump. d. Downstream, just beyond the discharge isolation valve for the