Virginia Erosion and Sediment Control
Specialist Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which of the following is the primary objective of erosion and
sediment control on a construction site?
A. Increase runoff velocity
B. Prevent soil from leaving the site and protect water quality
C. Maximize exposed soil areas
D. Eliminate all stormwater runoff
B. Prevent soil from leaving the site and protect water quality
Rationale: The fundamental purpose of erosion and sediment control (ESC)
programs is to minimize soil erosion and prevent sediment from being
transported into waterways, thereby protecting water quality and
environmental resources.
2. Which type of erosion occurs when raindrop impact dislodges soil
particles from the ground surface?
A. Gully erosion
B. Tunnel erosion
,C. Splash erosion
D. Streambank erosion
C. Splash erosion
Rationale: Splash erosion is caused by the impact of falling raindrops,
which detach and disperse soil particles, initiating the erosion process.
3. What is generally considered the most effective method of controlling
erosion?
A. Sediment basins only
B. Temporary seeding and stabilization
C. Street sweeping
D. Check dams alone
B. Temporary seeding and stabilization
Rationale: Stabilizing disturbed soil through vegetation, mulch, or other
protective measures addresses erosion at its source before sediment is
generated.
4. A silt fence is primarily designed to:
A. Prevent rainfall
B. Divert groundwater
C. Trap sediment from sheet flow runoff
D. Store hazardous waste
C. Trap sediment from sheet flow runoff
Rationale: Silt fences are perimeter controls intended to intercept and filter
sediment-laden sheet flow before it leaves a disturbed area.
5. Which erosion type is characterized by small channels formed by
concentrated runoff?
,A. Sheet erosion
B. Splash erosion
C. Rill erosion
D. Coastal erosion
C. Rill erosion
Rationale: Rill erosion develops when runoff concentrates into small
channels that can often be removed through normal grading operations.
6. Which document identifies ESC practices and sequencing for a land-
disturbing project?
A. Property deed
B. Erosion and Sediment Control Plan
C. Building occupancy permit
D. Environmental impact statement only
B. Erosion and Sediment Control Plan
Rationale: The ESC plan details control measures, stabilization methods,
and construction sequencing necessary to minimize erosion and sediment
transport.
7. What is the purpose of a construction entrance stabilized with stone?
A. Increase site drainage
B. Reduce tracking of sediment onto roadways
C. Store runoff
D. Improve aesthetics only
B. Reduce tracking of sediment onto roadways
Rationale: Stabilized construction entrances help remove soil from vehicle
tires before vehicles enter public streets.
8. Which factor has the greatest influence on erosion potential?
, A. Soil color
B. Wind direction only
C. Rainfall intensity and soil exposure
D. Property ownership
C. Rainfall intensity and soil exposure
Rationale: High-intensity rainfall acting on exposed soil significantly
increases detachment and transport of sediment.
9. Sediment controls are intended primarily to:
A. Prevent erosion from occurring
B. Capture sediment after erosion occurs
C. Increase infiltration only
D. Reduce groundwater recharge
B. Capture sediment after erosion occurs
Rationale: Sediment controls treat the symptoms of erosion by capturing
transported particles before they leave the site.
10. Which BMP is most appropriate for stabilizing a disturbed slope
immediately after grading?
A. Temporary seeding
B. Catch basin
C. Culvert
D. Riprap outlet only
A. Temporary seeding
Rationale: Temporary seeding provides rapid vegetative cover that
protects exposed soil from erosion.
11. What is the primary purpose of a sediment basin?
Specialist Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which of the following is the primary objective of erosion and
sediment control on a construction site?
A. Increase runoff velocity
B. Prevent soil from leaving the site and protect water quality
C. Maximize exposed soil areas
D. Eliminate all stormwater runoff
B. Prevent soil from leaving the site and protect water quality
Rationale: The fundamental purpose of erosion and sediment control (ESC)
programs is to minimize soil erosion and prevent sediment from being
transported into waterways, thereby protecting water quality and
environmental resources.
2. Which type of erosion occurs when raindrop impact dislodges soil
particles from the ground surface?
A. Gully erosion
B. Tunnel erosion
,C. Splash erosion
D. Streambank erosion
C. Splash erosion
Rationale: Splash erosion is caused by the impact of falling raindrops,
which detach and disperse soil particles, initiating the erosion process.
3. What is generally considered the most effective method of controlling
erosion?
A. Sediment basins only
B. Temporary seeding and stabilization
C. Street sweeping
D. Check dams alone
B. Temporary seeding and stabilization
Rationale: Stabilizing disturbed soil through vegetation, mulch, or other
protective measures addresses erosion at its source before sediment is
generated.
4. A silt fence is primarily designed to:
A. Prevent rainfall
B. Divert groundwater
C. Trap sediment from sheet flow runoff
D. Store hazardous waste
C. Trap sediment from sheet flow runoff
Rationale: Silt fences are perimeter controls intended to intercept and filter
sediment-laden sheet flow before it leaves a disturbed area.
5. Which erosion type is characterized by small channels formed by
concentrated runoff?
,A. Sheet erosion
B. Splash erosion
C. Rill erosion
D. Coastal erosion
C. Rill erosion
Rationale: Rill erosion develops when runoff concentrates into small
channels that can often be removed through normal grading operations.
6. Which document identifies ESC practices and sequencing for a land-
disturbing project?
A. Property deed
B. Erosion and Sediment Control Plan
C. Building occupancy permit
D. Environmental impact statement only
B. Erosion and Sediment Control Plan
Rationale: The ESC plan details control measures, stabilization methods,
and construction sequencing necessary to minimize erosion and sediment
transport.
7. What is the purpose of a construction entrance stabilized with stone?
A. Increase site drainage
B. Reduce tracking of sediment onto roadways
C. Store runoff
D. Improve aesthetics only
B. Reduce tracking of sediment onto roadways
Rationale: Stabilized construction entrances help remove soil from vehicle
tires before vehicles enter public streets.
8. Which factor has the greatest influence on erosion potential?
, A. Soil color
B. Wind direction only
C. Rainfall intensity and soil exposure
D. Property ownership
C. Rainfall intensity and soil exposure
Rationale: High-intensity rainfall acting on exposed soil significantly
increases detachment and transport of sediment.
9. Sediment controls are intended primarily to:
A. Prevent erosion from occurring
B. Capture sediment after erosion occurs
C. Increase infiltration only
D. Reduce groundwater recharge
B. Capture sediment after erosion occurs
Rationale: Sediment controls treat the symptoms of erosion by capturing
transported particles before they leave the site.
10. Which BMP is most appropriate for stabilizing a disturbed slope
immediately after grading?
A. Temporary seeding
B. Catch basin
C. Culvert
D. Riprap outlet only
A. Temporary seeding
Rationale: Temporary seeding provides rapid vegetative cover that
protects exposed soil from erosion.
11. What is the primary purpose of a sediment basin?
