This is training level trades work. Employees in this class perform work in the Water Department, the Department of Public Property, or the Streets Department developing the knowledge and skills necessary for advancement in an area of trade specialization. Employees perform rudimentary maintenance and repair work under the guidance of a higher-level trades worker. Assignments expand in complexity as employee's progress. Satisfactory completion of training and achievement of required minimum proficiencies are required for advancement. Work includes some disagreeable aspects and requires physical exertion. Work is performed under the direction of a technical superior.