Construction Site Stormwater Inspector
Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
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1.Which of the following is the primary purpose of conducting routine
stormwater inspections on an active construction site?
A. To verify that all construction equipment is operating efficiently
B. To ensure erosion and sediment controls are properly installed,
maintained, and functioning to prevent pollutant discharges
C. To estimate the remaining duration of the construction project
D. To calculate contractor payroll expenses
Rationale: Construction site stormwater inspections are intended to verify
compliance with stormwater regulations by ensuring best management
practices (BMPs) effectively minimize sediment and pollutant discharges
into nearby waters.
2. Under the Clean Water Act, construction activities disturbing one acre
or more of land generally require coverage under which permit?
A. National Emissions Permit
B. Underground Injection Control Permit
C. National Pollutant Discharge Elimination System (NPDES) Construction
General Permit
D. Air Quality Operating Permit
,Rationale: Construction projects disturbing one acre or more typically
require NPDES permit coverage to regulate stormwater discharges
associated with construction activities.
3. What is the primary pollutant of concern in stormwater runoff from
construction sites?
A. Nitrogen gas
B. Carbon dioxide
C. Sediment
D. Ozone
Rationale: Sediment is the leading pollutant generated from construction
sites because disturbed soil is easily transported by stormwater into
nearby waterways.
4. Which document provides detailed information about the erosion and
sediment control measures required for a construction site?
A. Material Safety Data Sheet (MSDS)
B. Equipment Maintenance Log
C. Stormwater Pollution Prevention Plan (SWPPP)
D. Building Occupancy Permit
Rationale: The SWPPP identifies potential pollutant sources and specifies
BMPs, inspection schedules, maintenance procedures, and compliance
requirements.
5. Which inspection finding requires immediate corrective action?
A. A clean and properly functioning stabilized construction entrance
B. A breached sediment barrier allowing muddy runoff to leave the site
C. A completed inspection report stored in the project office
D. Grass established on completed slopes
Rationale: A failed sediment control that allows sediment-laden runoff to
leave the site poses an immediate compliance and environmental concern.
, 6. What is the primary function of a silt fence?
A. Divert groundwater
B. Increase soil fertility
C. Intercept and filter sediment from sheet flow runoff
D. Store construction equipment
Rationale: Silt fences reduce sediment transport by slowing runoff and
allowing suspended soil particles to settle before leaving the site.
7. During an inspection, accumulated sediment behind a silt fence has
reached one-half of its height. What should the inspector
recommend?
A. Leave it until project completion.
B. Spray it with water.
C. Remove the accumulated sediment and repair the fence if necessary.
D. Remove the fence entirely.
Rationale: Sediment accumulation reduces the effectiveness of silt fences
and should be removed before reaching excessive levels.
8. Which BMP is specifically designed to minimize tracking of sediment
onto public roads?
A. Check dam
B. Sediment basin
C. Stabilized construction entrance
D. Riprap outlet
Rationale: Stabilized construction entrances help remove mud from vehicle
tires before they leave the construction site.
9. When inspecting inlet protection devices, the inspector should verify
that they are:
, A. Painted bright orange
B. Installed above utility lines only
C. Properly installed, free of excessive sediment accumulation, and
functioning as intended
D. Located at the highest point on the site
Rationale: Effective inlet protection prevents sediment from entering storm
drain systems while allowing stormwater to flow properly.
10. Which condition most increases the risk of erosion?
A. Dense vegetative cover
B. Flat terrain with stabilized soil
C. Steep disturbed slopes exposed to rainfall
D. Concrete pavement
Rationale: Steep, exposed slopes experience higher runoff velocity, making
them particularly susceptible to erosion.
11. What is the primary purpose of temporary seeding?
A. Increase property value
B. Improve traffic flow
C. Stabilize disturbed soil until permanent vegetation is established
D. Mark underground utilities
Rationale: Temporary vegetation protects exposed soils from erosion
during inactive construction periods.
12. Which BMP is most appropriate for slowing runoff velocity in a
temporary drainage ditch?
A. Gravel bag barrier
B. Silt fence
C. Check dam
D. Concrete curb
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1.Which of the following is the primary purpose of conducting routine
stormwater inspections on an active construction site?
A. To verify that all construction equipment is operating efficiently
B. To ensure erosion and sediment controls are properly installed,
maintained, and functioning to prevent pollutant discharges
C. To estimate the remaining duration of the construction project
D. To calculate contractor payroll expenses
Rationale: Construction site stormwater inspections are intended to verify
compliance with stormwater regulations by ensuring best management
practices (BMPs) effectively minimize sediment and pollutant discharges
into nearby waters.
2. Under the Clean Water Act, construction activities disturbing one acre
or more of land generally require coverage under which permit?
A. National Emissions Permit
B. Underground Injection Control Permit
C. National Pollutant Discharge Elimination System (NPDES) Construction
General Permit
D. Air Quality Operating Permit
,Rationale: Construction projects disturbing one acre or more typically
require NPDES permit coverage to regulate stormwater discharges
associated with construction activities.
3. What is the primary pollutant of concern in stormwater runoff from
construction sites?
A. Nitrogen gas
B. Carbon dioxide
C. Sediment
D. Ozone
Rationale: Sediment is the leading pollutant generated from construction
sites because disturbed soil is easily transported by stormwater into
nearby waterways.
4. Which document provides detailed information about the erosion and
sediment control measures required for a construction site?
A. Material Safety Data Sheet (MSDS)
B. Equipment Maintenance Log
C. Stormwater Pollution Prevention Plan (SWPPP)
D. Building Occupancy Permit
Rationale: The SWPPP identifies potential pollutant sources and specifies
BMPs, inspection schedules, maintenance procedures, and compliance
requirements.
5. Which inspection finding requires immediate corrective action?
A. A clean and properly functioning stabilized construction entrance
B. A breached sediment barrier allowing muddy runoff to leave the site
C. A completed inspection report stored in the project office
D. Grass established on completed slopes
Rationale: A failed sediment control that allows sediment-laden runoff to
leave the site poses an immediate compliance and environmental concern.
, 6. What is the primary function of a silt fence?
A. Divert groundwater
B. Increase soil fertility
C. Intercept and filter sediment from sheet flow runoff
D. Store construction equipment
Rationale: Silt fences reduce sediment transport by slowing runoff and
allowing suspended soil particles to settle before leaving the site.
7. During an inspection, accumulated sediment behind a silt fence has
reached one-half of its height. What should the inspector
recommend?
A. Leave it until project completion.
B. Spray it with water.
C. Remove the accumulated sediment and repair the fence if necessary.
D. Remove the fence entirely.
Rationale: Sediment accumulation reduces the effectiveness of silt fences
and should be removed before reaching excessive levels.
8. Which BMP is specifically designed to minimize tracking of sediment
onto public roads?
A. Check dam
B. Sediment basin
C. Stabilized construction entrance
D. Riprap outlet
Rationale: Stabilized construction entrances help remove mud from vehicle
tires before they leave the construction site.
9. When inspecting inlet protection devices, the inspector should verify
that they are:
, A. Painted bright orange
B. Installed above utility lines only
C. Properly installed, free of excessive sediment accumulation, and
functioning as intended
D. Located at the highest point on the site
Rationale: Effective inlet protection prevents sediment from entering storm
drain systems while allowing stormwater to flow properly.
10. Which condition most increases the risk of erosion?
A. Dense vegetative cover
B. Flat terrain with stabilized soil
C. Steep disturbed slopes exposed to rainfall
D. Concrete pavement
Rationale: Steep, exposed slopes experience higher runoff velocity, making
them particularly susceptible to erosion.
11. What is the primary purpose of temporary seeding?
A. Increase property value
B. Improve traffic flow
C. Stabilize disturbed soil until permanent vegetation is established
D. Mark underground utilities
Rationale: Temporary vegetation protects exposed soils from erosion
during inactive construction periods.
12. Which BMP is most appropriate for slowing runoff velocity in a
temporary drainage ditch?
A. Gravel bag barrier
B. Silt fence
C. Check dam
D. Concrete curb
