NPDES Best Management Practices
(BMP) Implementation Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of Best Management Practices (BMPs) in
stormwater management?
A. Increase industrial production
B. Reduce pollutant discharge into receiving waters
C. Maximize groundwater extraction
D. Eliminate all rainfall runoff
Correct Answer: B
Rationale: BMPs are designed to reduce or control pollutants in
stormwater runoff before it reaches surface waters.
2. Which of the following is a structural BMP?
A. Employee training program
B. Spill prevention plan
, C. Sediment basin
D. Good housekeeping practices
Correct Answer: C
Rationale: Structural BMPs involve physical installations such as
sediment basins, whereas others are operational BMPs.
3. Which BMP is most effective for controlling erosion on disturbed soil?
A. Street sweeping
B. Mulching
C. Chemical treatment
D. Increased traffic flow
Correct Answer: B
Rationale: Mulching protects soil from rainfall impact and reduces
erosion.
4. A key goal of BMP implementation is to:
A. Increase sediment transport
B. Prevent stormwater infiltration
C. Minimize pollutant loading
D. Increase surface runoff velocity
Correct Answer: C
Rationale: BMPs aim to minimize pollutant loading in stormwater
runoff.
5. Which is an example of a non-structural BMP?
A. Detention pond
, B. Infiltration trench
C. Employee training
D. Check dam
Correct Answer: C
Rationale: Non-structural BMPs focus on procedures and behavior,
such as training.
6. When should BMPs be inspected at construction sites?
A. Only after project completion
B. Monthly regardless of conditions
C. After rainfall events and regularly
D. Only when violations are reported
Correct Answer: C
Rationale: BMPs must be inspected regularly and after storm events
to ensure effectiveness.
7. Sediment controls are primarily used to:
A. Increase soil compaction
B. Trap soil particles before leaving site
C. Accelerate runoff
D. Remove chemical pollutants only
Correct Answer: B
Rationale: Sediment controls prevent soil particles from leaving
disturbed areas.
, 8. Which BMP reduces stormwater flow rate?
A. Concrete pavement
B. Detention basin
C. Roof venting
D. Fuel storage tank
Correct Answer: B
Rationale: Detention basins temporarily store runoff and reduce
peak flow rates.
9. Good housekeeping BMPs include:
A. Leaving waste uncovered
B. Proper material storage
C. Increasing erosion areas
D. Blocking drainage paths
Correct Answer: B
Rationale: Proper storage prevents pollutants from entering
stormwater systems.
10. The most effective BMPs are:
A. Randomly selected
B. Site-specific and properly maintained
C. Only structural
D. Only temporary
Correct Answer: B
(BMP) Implementation Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of Best Management Practices (BMPs) in
stormwater management?
A. Increase industrial production
B. Reduce pollutant discharge into receiving waters
C. Maximize groundwater extraction
D. Eliminate all rainfall runoff
Correct Answer: B
Rationale: BMPs are designed to reduce or control pollutants in
stormwater runoff before it reaches surface waters.
2. Which of the following is a structural BMP?
A. Employee training program
B. Spill prevention plan
, C. Sediment basin
D. Good housekeeping practices
Correct Answer: C
Rationale: Structural BMPs involve physical installations such as
sediment basins, whereas others are operational BMPs.
3. Which BMP is most effective for controlling erosion on disturbed soil?
A. Street sweeping
B. Mulching
C. Chemical treatment
D. Increased traffic flow
Correct Answer: B
Rationale: Mulching protects soil from rainfall impact and reduces
erosion.
4. A key goal of BMP implementation is to:
A. Increase sediment transport
B. Prevent stormwater infiltration
C. Minimize pollutant loading
D. Increase surface runoff velocity
Correct Answer: C
Rationale: BMPs aim to minimize pollutant loading in stormwater
runoff.
5. Which is an example of a non-structural BMP?
A. Detention pond
, B. Infiltration trench
C. Employee training
D. Check dam
Correct Answer: C
Rationale: Non-structural BMPs focus on procedures and behavior,
such as training.
6. When should BMPs be inspected at construction sites?
A. Only after project completion
B. Monthly regardless of conditions
C. After rainfall events and regularly
D. Only when violations are reported
Correct Answer: C
Rationale: BMPs must be inspected regularly and after storm events
to ensure effectiveness.
7. Sediment controls are primarily used to:
A. Increase soil compaction
B. Trap soil particles before leaving site
C. Accelerate runoff
D. Remove chemical pollutants only
Correct Answer: B
Rationale: Sediment controls prevent soil particles from leaving
disturbed areas.
, 8. Which BMP reduces stormwater flow rate?
A. Concrete pavement
B. Detention basin
C. Roof venting
D. Fuel storage tank
Correct Answer: B
Rationale: Detention basins temporarily store runoff and reduce
peak flow rates.
9. Good housekeeping BMPs include:
A. Leaving waste uncovered
B. Proper material storage
C. Increasing erosion areas
D. Blocking drainage paths
Correct Answer: B
Rationale: Proper storage prevents pollutants from entering
stormwater systems.
10. The most effective BMPs are:
A. Randomly selected
B. Site-specific and properly maintained
C. Only structural
D. Only temporary
Correct Answer: B
