Wastewater Collection Operator Class I study plan

Diagram from memory a complete gravity collection system, labeling manholes, service laterals, lift station, force main, and discharge point

Solve five Manning's-equation problems for flow velocity and capacity given pipe diameter, slope, and roughness coefficient

List in order the steps of a manhole and main-line inspection and record six common defects (roots, grease, cracks, sags, infiltration, offset joints) on a standard log form

Explain the causes and the corrective action for infiltration/inflow, grease blockages, and hydrogen sulfide odor complaints

Select the appropriate cleaning method (hydraulic flushing, rodding, bucket machine) for five written blockage scenarios and justify each choice in one sentence

Describe the sequence of a CCTV inspection and classify five sample defect descriptions by severity

Match four pump types (submersible, self-priming, centrifugal, positive displacement) to their typical collection-system applications

Explain the causes, symptoms, and prevention of cavitation and of air binding in a force main

Calculate total dynamic head for three pump stations given static lift, friction loss, and velocity head

Read a pump curve to identify shutoff head, best efficiency point, and the effect of running two pumps in parallel

Build a preventive maintenance checklist covering seals, bearings, lubrication, shaft alignment, and vibration checks

Diagnose six written pump and motor faults (vibration, overheating, loss of prime, seal leakage, overload trip, noisy operation) and name the most likely cause of each

Work through five combined scenarios linking a collection system condition to a pump station symptom and state the corrective action

Explain wet-well drawdown, pump cycling, and the purpose of variable frequency drives and motor overload protection

Re-answer every item missed in weeks 1 through 3 and restate the correct reasoning without notes

Complete a timed mixed practice test under exam conditions without reference material

Identify confined space hazards and list the elements of an entry permit for a wet well or manhole entry

Sequence the steps of lockout/tagout and describe how to verify zero energy before maintenance

State the health effects and the monitoring action levels for hydrogen sulfide, methane, carbon monoxide, and oxygen deficiency

Select the correct PPE and describe the protective system for a trench five feet deep in unstable soil

Outline traffic control for a work zone on a two-lane road using cones, signs, and a flagger

Write the response sequence for a sanitary sewer overflow, a pump station power failure, and a chemical spill at a treatment site

Identify which events trigger immediate notification to the regulatory agency and which require written follow-up reports

Describe the recordkeeping requirements for spills, overflows, and safety incidents, including retention periods

Explain the operator's duty to report and the penalties for failing to notify

Summarize the regulatory framework governing collection systems, including the Clean Water Act, NPDES permits, and local pretreatment rules

State the certification, continuing education, and renewal requirements for a Class I collection operator

List the reports and records a collection system must maintain and the frequency of each

Describe the worker safety obligations an employer owes under applicable occupational safety regulations

Complete two full-length timed practice exams covering all four domains

Review every missed item and re-state the governing principle behind each without looking it up

Re-derive the key formulas and threshold values from memory on a blank sheet

Rank the four domains by practice score and drill the weakest domain until it matches the strongest