Certified Stormwater Inspector Practice Exam
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. What is the primary purpose of a Stormwater Pollution Prevention
Plan (SWPPP)?
A. To eliminate all construction activities
B. To manage and reduce pollutants in stormwater runoff
C. To increase water flow in drainage systems
D. To monitor groundwater levels
Answer: B
Rationale: A SWPPP is designed to identify potential pollution
sources and implement measures to reduce contaminants in
stormwater runoff, especially during construction activities.
2. Which of the following is considered a nonpoint source of
pollution?
A. Industrial discharge pipe
B. Wastewater treatment plant outfall
, C. Agricultural runoff
D. Factory effluent line
Answer: C
Rationale: Nonpoint source pollution comes from diffuse sources
like agricultural runoff, rather than a single identifiable
discharge point.
3. What does BMP stand for in stormwater management?
A. Best Monitoring Practice
B. Basic Management Plan
C. Best Management Practice
D. Baseline Monitoring Procedure
Answer: C
Rationale: BMPs are structural or non-structural practices used
to control pollutants in stormwater.
4. Which pollutant is most commonly associated with construction
site runoff?
A. Chlorine
B. Sediment
C. Mercury
D. Radon
Answer: B
, Rationale: Sediment is the most common pollutant due to soil
disturbance during construction.
5. What is the main function of silt fences?
A. Filter oil from water
B. Control dust emissions
C. Trap sediment in runoff
D. Increase infiltration
Answer: C
Rationale: Silt fences are perimeter controls used to capture
sediment before it leaves a site.
6. Which agency administers the National Pollutant Discharge
Elimination System (NPDES)?
A. CDC
B. EPA
C. OSHA
D. FEMA
Answer: B
Rationale: The Environmental Protection Agency (EPA) oversees
the NPDES program.
7. What is the first step in developing a SWPPP?
A. Installing BMPs
, B. Conducting site assessment
C. Training employees
D. Filing permits
Answer: B
Rationale: A site assessment identifies potential pollutant
sources and drainage patterns.
8. What is turbidity a measure of?
A. Temperature
B. Clarity of water
C. pH level
D. Oxygen content
Answer: B
Rationale: Turbidity measures how clear or cloudy water is due
to suspended particles.
9. Which BMP is considered structural?
A. Employee training
B. Spill prevention plan
C. Retention pond
D. Inspection schedule
Answer: C
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a Stormwater Pollution Prevention
Plan (SWPPP)?
A. To eliminate all construction activities
B. To manage and reduce pollutants in stormwater runoff
C. To increase water flow in drainage systems
D. To monitor groundwater levels
Answer: B
Rationale: A SWPPP is designed to identify potential pollution
sources and implement measures to reduce contaminants in
stormwater runoff, especially during construction activities.
2. Which of the following is considered a nonpoint source of
pollution?
A. Industrial discharge pipe
B. Wastewater treatment plant outfall
, C. Agricultural runoff
D. Factory effluent line
Answer: C
Rationale: Nonpoint source pollution comes from diffuse sources
like agricultural runoff, rather than a single identifiable
discharge point.
3. What does BMP stand for in stormwater management?
A. Best Monitoring Practice
B. Basic Management Plan
C. Best Management Practice
D. Baseline Monitoring Procedure
Answer: C
Rationale: BMPs are structural or non-structural practices used
to control pollutants in stormwater.
4. Which pollutant is most commonly associated with construction
site runoff?
A. Chlorine
B. Sediment
C. Mercury
D. Radon
Answer: B
, Rationale: Sediment is the most common pollutant due to soil
disturbance during construction.
5. What is the main function of silt fences?
A. Filter oil from water
B. Control dust emissions
C. Trap sediment in runoff
D. Increase infiltration
Answer: C
Rationale: Silt fences are perimeter controls used to capture
sediment before it leaves a site.
6. Which agency administers the National Pollutant Discharge
Elimination System (NPDES)?
A. CDC
B. EPA
C. OSHA
D. FEMA
Answer: B
Rationale: The Environmental Protection Agency (EPA) oversees
the NPDES program.
7. What is the first step in developing a SWPPP?
A. Installing BMPs
, B. Conducting site assessment
C. Training employees
D. Filing permits
Answer: B
Rationale: A site assessment identifies potential pollutant
sources and drainage patterns.
8. What is turbidity a measure of?
A. Temperature
B. Clarity of water
C. pH level
D. Oxygen content
Answer: B
Rationale: Turbidity measures how clear or cloudy water is due
to suspended particles.
9. Which BMP is considered structural?
A. Employee training
B. Spill prevention plan
C. Retention pond
D. Inspection schedule
Answer: C
