VIRGINIA WASTEWATER OPERATOR CLASS 2 LICENSE
EXAMINATION COMPLETE QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR JUST RELEASED
Major Exam Coverage Areas
1. Virginia Licensing, Regulations, and Operator Responsibilities — Virginia Class 2 wastewater
licensure, regulatory duties, operating authority, records, professional conduct, and compliance
responsibilities. Virginia’s Class 2 wastewater exam corresponds to the ABC Wastewater
Treatment Operator Class III examination. (
2. Preliminary and Primary Treatment — Screening, grit removal, comminution, flow
measurement, equalization, primary clarification, and scum removal.
3. Activated Sludge and Biological Treatment — Aeration, microorganisms, F/M ratio, MLSS,
MLVSS, SRT, DO, sludge age, return activated sludge, and wasting.
4. Secondary Clarification and Solids Separation — Settling characteristics, sludge blankets, rising
sludge, bulking, pin floc, hydraulic loading, and solids capture.
5. Biological Nutrient Removal and Advanced Treatment — Nitrification, denitrification,
phosphorus removal, anoxic/anaerobic zones, alkalinity, and process control.
6. Disinfection and Effluent Quality — Chlorine, UV, ozone, contact time, CT concepts, residuals,
dechlorination, and pathogen control.
7. Solids Handling and Sludge Management — Thickening, digestion, dewatering, stabilization,
biosolids handling, odors, and disposal considerations.
8. Laboratory Testing and Process Control — BOD, TSS, ammonia, pH, DO, alkalinity, microscopic
examination, sampling, calculations, and interpretation of trends.
9. Pumps, Mechanical Equipment, Electrical Systems, and Maintenance — Pumps, blowers,
valves, motors, instrumentation, preventive maintenance, troubleshooting, and safety.
10. Safety, Emergency Response, and Environmental Compliance — Confined spaces, chemical
hazards, spills, permit conditions, reporting, operational emergencies, and protection of
receiving waters.
1.
A wastewater operator is assigned responsibility for operating a Virginia
wastewater works classified above the operator's current license
classification. What is the most appropriate action?
,A. Operate the facility temporarily without restrictions
B. Operate only during weekends and holidays
C. Ensure an appropriately licensed operator is responsible for the facility
D. Operate independently if the plant meets its effluent limits
Answer: C
Rationale: Virginia regulations require an operator serving a wastewater
works to possess a valid license with a classification equal to or greater than
the classification of the applicable wastewater works. (v)
2.
Why is accurate operational recordkeeping particularly important for a
wastewater treatment plant operator?
A. Records eliminate the need for laboratory testing
B. Records document plant performance and support regulatory compliance
C. Records replace preventive maintenance programs
D. Records allow operators to ignore permit requirements
Answer: B
Rationale: Operational records provide evidence of treatment performance,
process control, maintenance activities, sampling, and compliance with
applicable requirements.
3.
A Class 2 Virginia wastewater operator is reviewing examination materials
and notices references to ABC operator classifications. Which ABC
classification corresponds to Virginia Class 2 wastewater?
,A. ABC Class I
B. ABC Class II
C. ABC Class III
D. ABC Class IV
Answer: C
Rationale: Virginia DPOR specifically identifies Virginia Wastewater Works
Class 2 as corresponding to the ABC Wastewater Treatment Operator Class
III examination. (
4.
An operator discovers that an important process-monitoring instrument has
been malfunctioning for several days. What should the operator do first?
A. Delete the questionable readings
B. Ignore the problem until the next inspection
C. Document the problem and initiate appropriate corrective action
D. Estimate all missing values without documentation
Answer: C
Rationale: Accurate records and timely corrective action are fundamental
elements of responsible wastewater plant operation. Missing or
questionable data should not be concealed or fabricated.
5.
Which condition most directly demonstrates that a wastewater operator is
exercising proper professional judgment?
, A. Increasing chemical dosage whenever the effluent changes color
B. Making process adjustments based on verified data and plant trends
C. Changing several process variables simultaneously without
documentation
D. Waiting for a permit violation before investigating abnormal conditions
Answer: B
Rationale: Good process control relies on representative measurements,
trends, sound operating principles, and documented adjustments rather
than guesswork.
6.
Why should a wastewater operator become familiar with the facility's
permit requirements?
A. Permits establish operational and discharge requirements applicable to
the facility
B. Permits apply only to laboratory personnel
C. Permits are optional when the plant has experienced operators
D. Permits eliminate the need for process monitoring
Answer: A
Rationale: Wastewater discharge permits establish requirements governing
treatment performance, monitoring, reporting, and discharge conditions.
7.
Virginia regulations require wastewater operators to hold an appropriate
license classification primarily to protect what?
EXAMINATION COMPLETE QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR JUST RELEASED
Major Exam Coverage Areas
1. Virginia Licensing, Regulations, and Operator Responsibilities — Virginia Class 2 wastewater
licensure, regulatory duties, operating authority, records, professional conduct, and compliance
responsibilities. Virginia’s Class 2 wastewater exam corresponds to the ABC Wastewater
Treatment Operator Class III examination. (
2. Preliminary and Primary Treatment — Screening, grit removal, comminution, flow
measurement, equalization, primary clarification, and scum removal.
3. Activated Sludge and Biological Treatment — Aeration, microorganisms, F/M ratio, MLSS,
MLVSS, SRT, DO, sludge age, return activated sludge, and wasting.
4. Secondary Clarification and Solids Separation — Settling characteristics, sludge blankets, rising
sludge, bulking, pin floc, hydraulic loading, and solids capture.
5. Biological Nutrient Removal and Advanced Treatment — Nitrification, denitrification,
phosphorus removal, anoxic/anaerobic zones, alkalinity, and process control.
6. Disinfection and Effluent Quality — Chlorine, UV, ozone, contact time, CT concepts, residuals,
dechlorination, and pathogen control.
7. Solids Handling and Sludge Management — Thickening, digestion, dewatering, stabilization,
biosolids handling, odors, and disposal considerations.
8. Laboratory Testing and Process Control — BOD, TSS, ammonia, pH, DO, alkalinity, microscopic
examination, sampling, calculations, and interpretation of trends.
9. Pumps, Mechanical Equipment, Electrical Systems, and Maintenance — Pumps, blowers,
valves, motors, instrumentation, preventive maintenance, troubleshooting, and safety.
10. Safety, Emergency Response, and Environmental Compliance — Confined spaces, chemical
hazards, spills, permit conditions, reporting, operational emergencies, and protection of
receiving waters.
1.
A wastewater operator is assigned responsibility for operating a Virginia
wastewater works classified above the operator's current license
classification. What is the most appropriate action?
,A. Operate the facility temporarily without restrictions
B. Operate only during weekends and holidays
C. Ensure an appropriately licensed operator is responsible for the facility
D. Operate independently if the plant meets its effluent limits
Answer: C
Rationale: Virginia regulations require an operator serving a wastewater
works to possess a valid license with a classification equal to or greater than
the classification of the applicable wastewater works. (v)
2.
Why is accurate operational recordkeeping particularly important for a
wastewater treatment plant operator?
A. Records eliminate the need for laboratory testing
B. Records document plant performance and support regulatory compliance
C. Records replace preventive maintenance programs
D. Records allow operators to ignore permit requirements
Answer: B
Rationale: Operational records provide evidence of treatment performance,
process control, maintenance activities, sampling, and compliance with
applicable requirements.
3.
A Class 2 Virginia wastewater operator is reviewing examination materials
and notices references to ABC operator classifications. Which ABC
classification corresponds to Virginia Class 2 wastewater?
,A. ABC Class I
B. ABC Class II
C. ABC Class III
D. ABC Class IV
Answer: C
Rationale: Virginia DPOR specifically identifies Virginia Wastewater Works
Class 2 as corresponding to the ABC Wastewater Treatment Operator Class
III examination. (
4.
An operator discovers that an important process-monitoring instrument has
been malfunctioning for several days. What should the operator do first?
A. Delete the questionable readings
B. Ignore the problem until the next inspection
C. Document the problem and initiate appropriate corrective action
D. Estimate all missing values without documentation
Answer: C
Rationale: Accurate records and timely corrective action are fundamental
elements of responsible wastewater plant operation. Missing or
questionable data should not be concealed or fabricated.
5.
Which condition most directly demonstrates that a wastewater operator is
exercising proper professional judgment?
, A. Increasing chemical dosage whenever the effluent changes color
B. Making process adjustments based on verified data and plant trends
C. Changing several process variables simultaneously without
documentation
D. Waiting for a permit violation before investigating abnormal conditions
Answer: B
Rationale: Good process control relies on representative measurements,
trends, sound operating principles, and documented adjustments rather
than guesswork.
6.
Why should a wastewater operator become familiar with the facility's
permit requirements?
A. Permits establish operational and discharge requirements applicable to
the facility
B. Permits apply only to laboratory personnel
C. Permits are optional when the plant has experienced operators
D. Permits eliminate the need for process monitoring
Answer: A
Rationale: Wastewater discharge permits establish requirements governing
treatment performance, monitoring, reporting, and discharge conditions.
7.
Virginia regulations require wastewater operators to hold an appropriate
license classification primarily to protect what?
