North Carolina CESSWI – Certification
Practice Exam Newest 2025 – 2026
Updated Questions From Actual Exams
Complete 100 Questions And Correct
Detailed Answers (Verified Answers)
|Already Graded A+||Brand New!!
1. Which soil particle size is most prone to erosion by stormwater runoff?
A. Gravel
B. Sand
C. Silt
D. Clay
✓
Answer: C. Silt
Explanation: Silt particles are lightweight and easily detached and
transported by flowing water, making them highly erodible compared to
sand, clay, and gravel.
2. The primary goal of erosion control measures on a construction site is to:
A. Increase water infiltration
B. Prevent soil displacement
C. Speed up drainage
D. Reduce construction costs
✓
Answer: B. Prevent soil displacement
Explanation: Erosion control focuses on keeping soil in place to minimize
sediment loss and environmental impact.
,3. Which BMP is considered a perimeter control?
A. Silt fence
B. Concrete washout
C. Gravel entrance
D. Dust suppressant
✓
Answer: A. Silt fence
Explanation: Silt fences are installed along site boundaries to trap
sediment in runoff before it leaves the site.
4. Sediment control measures are designed primarily to:
A. Stop rainfall
B. Remove soil particles after erosion occurs
C. Prevent soil from being exposed
D. Increase slope stability
✓
Answer: B. Remove soil particles after erosion occurs
Explanation: Sediment controls capture displaced soil carried by runoff,
unlike erosion controls which prevent soil movement.
5. What is the most effective first step in erosion control planning?
A. Installing storm drains
B. Seeding all disturbed areas
C. Minimizing disturbed soil area
D. Increasing slope gradients
✓
Answer: C. Minimizing disturbed soil area
Explanation: Reducing exposed soil reduces the potential for erosion at
the source.
6. A stabilized construction entrance is used to:
A. Control dust only
B. Filter groundwater
C. Remove sediment from vehicle tires
, D. Increase infiltration
✓
Answer: C. Remove sediment from vehicle tires
Explanation: Stabilized entrances prevent sediment from being tracked
onto public roads.
7. Sheet erosion is best described as:
A. Deep channel formation
B. Uniform removal of thin soil layers
C. Collapse of soil banks
D. Sediment deposition in channels
✓
Answer: B. Uniform removal of thin soil layers
Explanation: Sheet erosion occurs evenly across a surface without visible
channels.
8. Which factor most directly increases erosion potential?
A. Vegetative cover
B. Gentle slopes
C. High rainfall intensity
D. Soil compaction
✓
Answer: C. High rainfall intensity
Explanation: Heavy rainfall increases runoff velocity and soil particle
detachment.
9. A sediment basin is primarily used to:
A. Store construction materials
B. Detain runoff and settle sediment
C. Increase groundwater recharge
D. Prevent rainfall impact
✓
Answer: B. Detain runoff and settle sediment
Practice Exam Newest 2025 – 2026
Updated Questions From Actual Exams
Complete 100 Questions And Correct
Detailed Answers (Verified Answers)
|Already Graded A+||Brand New!!
1. Which soil particle size is most prone to erosion by stormwater runoff?
A. Gravel
B. Sand
C. Silt
D. Clay
✓
Answer: C. Silt
Explanation: Silt particles are lightweight and easily detached and
transported by flowing water, making them highly erodible compared to
sand, clay, and gravel.
2. The primary goal of erosion control measures on a construction site is to:
A. Increase water infiltration
B. Prevent soil displacement
C. Speed up drainage
D. Reduce construction costs
✓
Answer: B. Prevent soil displacement
Explanation: Erosion control focuses on keeping soil in place to minimize
sediment loss and environmental impact.
,3. Which BMP is considered a perimeter control?
A. Silt fence
B. Concrete washout
C. Gravel entrance
D. Dust suppressant
✓
Answer: A. Silt fence
Explanation: Silt fences are installed along site boundaries to trap
sediment in runoff before it leaves the site.
4. Sediment control measures are designed primarily to:
A. Stop rainfall
B. Remove soil particles after erosion occurs
C. Prevent soil from being exposed
D. Increase slope stability
✓
Answer: B. Remove soil particles after erosion occurs
Explanation: Sediment controls capture displaced soil carried by runoff,
unlike erosion controls which prevent soil movement.
5. What is the most effective first step in erosion control planning?
A. Installing storm drains
B. Seeding all disturbed areas
C. Minimizing disturbed soil area
D. Increasing slope gradients
✓
Answer: C. Minimizing disturbed soil area
Explanation: Reducing exposed soil reduces the potential for erosion at
the source.
6. A stabilized construction entrance is used to:
A. Control dust only
B. Filter groundwater
C. Remove sediment from vehicle tires
, D. Increase infiltration
✓
Answer: C. Remove sediment from vehicle tires
Explanation: Stabilized entrances prevent sediment from being tracked
onto public roads.
7. Sheet erosion is best described as:
A. Deep channel formation
B. Uniform removal of thin soil layers
C. Collapse of soil banks
D. Sediment deposition in channels
✓
Answer: B. Uniform removal of thin soil layers
Explanation: Sheet erosion occurs evenly across a surface without visible
channels.
8. Which factor most directly increases erosion potential?
A. Vegetative cover
B. Gentle slopes
C. High rainfall intensity
D. Soil compaction
✓
Answer: C. High rainfall intensity
Explanation: Heavy rainfall increases runoff velocity and soil particle
detachment.
9. A sediment basin is primarily used to:
A. Store construction materials
B. Detain runoff and settle sediment
C. Increase groundwater recharge
D. Prevent rainfall impact
✓
Answer: B. Detain runoff and settle sediment
