Operates a combination cleaning and vacuuming machine and associated tools and equipment, such as nozzles, hoses, and root cutters used in the power cleaning and prevention maintenance of wastewater collection lines and related structures; Evaluates the cleaning needs and the most effective means of cleaning the wastewater collection lines and related structures; determines the most appropriate hoses and nozzles to use for specific wastewater lines; determines if and which cutting devices are needed, and the amount of water pressure to use for safe and thorough cleaning; Monitors toxic gas and oxygen levels inside sewer lines while completing work; Performs preventative and corrective maintenance of combination cleaning equipment as needed; Prepares and creates work orders and other reports, tracks job time, material, and equipment used as required using a personal computer; Locates wastewater collection lines by reading sewer maps, atlases, and blueprints; Drives City vehicles requiring commercial drivers license to and from assigned worksites to transport equipment, materials, and staff; Answers questions from the public regarding work being performed; May supervise at least one Collection Systems Technician to include evaluating and signing performance appraisals, and initiating disciplinary action. The examination process will consist of a computerized exam weighted 25% covering Sewer Maintenance, Map Reading, Computer Skills and Forms Completion, and a performance exam weighted 75% covering a Safety Check and the Operation of a Vactor (combination cleaning and vacuuming vehicle).