Under immediate, general supervision, or direction, performs semi-skilled and skilled work in the operation and maintenance of the District's wastewater treatment plant, equipment and processes; regulates influent and effluent flows within the system; performs repair work on facilities; performs basic laboratory testing and sample collection; and performs related work as required. Receives immediate supervision (Operator-in-Training, Operator I), general supervision (Operator II), or direction (Operator III) from assigned supervisory or management personnel. Exercises no direct supervision over staff. Operator-in-Training is an entry-level, trainee classification. Initially under close supervision, incumbents learn basic working knowledge of the District's wastewater treatment plant operation in a training capacity. As experience is gained, assignments become more varied, complex, and difficult; close supervision and frequent review of work lessen as incumbent demonstrates skill to perform the work independently. Work is usually supervised while in progress and fits an established structure or pattern. Exceptions or changes in procedures are explained in detail as they arise. Operator I is an entry-level classification. Initially under close supervision, incumbents learn and perform semi-skilled and skilled duties in the operation and maintenance of the District's wastewater treatment plant, equipment and processes. As experience is gained, assignments become more varied, complex, and difficult; close supervision and frequent review of work lessen as incumbent demonstrates skill to perform the work independently. Positions at this level usually perform most of the duties required of the positions at the Operator II level but are not expected to function at the same skill level and usually exercise less independent discretion and judgement in matters related to work procedures and methods. Work is usually supervised while in progress and fits an established structure or pattern. Exceptions or changes in procedures are explained in detail as they arise. Operator II is the fully qualified journey-level classification in the series. Positions at this level are distinguished from Operator I level by the performance of a full range of duties as assigned, working independently, and exercising judgement and initiative. Positions at this level receive only occasional instruction or assistance as new or unusual situations arise and are fully aware of the operating procedures and policies of the work unit. This class is distinguished from the Operator III in that the latter performs more complex work assigned to the series, such as independently taking actions necessary for the operation and maintenance consistent with mandated certifications required to perform such duties, and which are dependent on the state designated level of the treatment plant; the Operator III level also performs duties including assisting with the planning, coordination, and scheduling of the overall plant operation during assigned shifts and/or providing technical and functional direction over lower-level staff. Operator III is the advanced-level classification in the series responsible for performing the most complex work assigned to the series. Incumbents regularly work on tasks which are varied and complex, requiring considerable discretion and independent judgment. Positions in the classification rely on experience and judgement to perform assigned duties, independently take actions necessary for the operation and maintenance consistent with mandated certifications required to perform such duties, and which are dependent on the state designated level of the treatment plant. The position also performs duties including assisting with the planning, coordination, and scheduling of the overall plant operation during assigned shifts and/or providing technical and functional direction over lower-level staff. Assignments are given with general guidelines and incumbents are responsible for establishing objectives, timelines and methods to complete assignments. Work is typically reviewed upon completion for soundness, appropriateness, and conformity to policy requirements. Positions in the Wastewater Treatment Operator class series are flexibly staffed; positions at the Operator II and III levels are normally filled by advancement from the Wastewater Operator I and II levels; progression to the next level is dependent on: Management affirmation that the position is performing a full range of duties assigned to the classification; Satisfactory work performance; The incumbent meeting the minimum qualifications for the classification including any licenses and certifications, and District assessment testing requirements; and Management approval for progression to the next level in the class series. Management reserves the right to add, modify, change, or rescind the work assignments of different positions and to make reasonable accommodations so that qualified employees can perform the essential functions of the job. Monitors the operation of wastewater treatment pumps, motors and other equipment. Reads gauges, dials, and other instruments that record plant operations; locates malfunctions in electrical control circuits, terminals and switches. Observes variations in operating conditions; interprets meter and gauge readings and test results to determine processing requirements; makes necessary adjustments. Computes plant flows; utilizes a calculator and accurate samplings of influent, effluent and mixed liquor. Calibrates meters and makes corrections; regulates pressures and flow rates in accordance with demand. Makes visual inspections of plant operations; locates and corrects operational problems; maintains appropriate records and logs. Inspects, cleans and maintains pumps, valves, motors, filters, meters and related plant equipment. Collects various water and sewage samples for laboratory analysis and performs basic water quality analysis tests. Operates biosolids processing to waste digested sludge in drying beds and removes dried sludge from beds for off-site disposal. Operates mobile cranes and other hoisting equipment; assists other departments in crane operations. Maintains plant premises; sweeps floors, removes cobwebs, and hoses down specific areas; keep areas near equipment free from debris; washes assigned work vehicle/carts performs general grounds maintenance outside plant facilities. May assist in the training of less experienced operators. Assists the Operations Supervisor with the planning, coordinating, and scheduling of the overall plant operation during assigned shifts. Maintains work, time and material records. Provides recommendations regarding needing parts and suppliers. Observes safe work methods and makes appropriate use of related safety equipment as required. Performs other duties as assigned.

Knowledge of:

Principles and practices of wastewater treatment plant operations; operating principles of valves, pumps, and motors; principles and practices of bacteriological and chemical sewage sample collection and analysis; principles and practices of mechanical, maintenance and electrical systems; safe application, operation and maintenance of tools and equipment used in course of work; occupational hazards and safety equipment and practices related to the work including confined space requirements; basic arithmetic; principles and procedures of record-keeping and reporting; District and mandated safety rules, regulations and protocols; techniques for providing a high level of customer service by effectively dealing with the public, vendors, contractors and District staff; the structure and content of the English language to effectively perform the work; modern equipment and communication tools used for business functions and program, project, and task coordination, including computers and software programs relevant to work performed; operational characteristics, and the safe and proper use of machinery, tools, equipment and materials necessary to perform assigned duties.

Ability to:

Perform a variety of complex technical tasks in the installation, repair, and maintenance of equipment including pumps, motors, valves, and related equipment and appurtenances; troubleshoot maintenance problems and make effective corrections; recognize and report unusual, inefficient or dangerous operating situations; read and interpret gauges and other recording devices found in wastewater treatment plant operations; take wastewater and sludge samples and perform routine laboratory tests; use a diverse range of diagnostic tools to identify maintenance needs; skillfully and safely operate a variety of equipment, vehicles, and power and hand tools used in the mechanical and maintenance field; estimate necessary materials and equipment to complete assignments; prepare records and basic reports; read, interpret, and apply a wide variety of technical information from manuals, drawings, specifications, layouts, blueprints and electrical schematics; maintain accurate arithmetic calculations; maintain accurate logs, records and basic written records of work performed; use tact, initiative, prudence, and independent judgment within general policy and procedural guidelines; effectively use computer systems, software applications relevant to work performed and modern business equipment to perform a variety of work tasks; communicate clearly and concisely, bother orally and in writing, using appropriate English grammar and syntax; establish, maintain, and foster positive and effective working relationships with those contacted in the course of work.

Work Environment:

Employees work in the field and are exposed to loud noise levels, cold and hot temperatures, inclement weather conditions, road hazards, vibration, confining workspace, work at heights, chemicals, mechanical and/or electrical hazards, exposure to biological and infectious agents, exposure to vermin, inspects, parasites, etc., hazardous physical substances and fumes, dust and air contaminants. Employees may interact with upset staff and/or public and private representatives in interpreting and enforcing departmental policies and procedures.