Virginia Erosion & Sediment Control (ESC) Inspector Exam
– Questions & Answers | Latest Update 2026 | 100% Pass
Guarantee | Exam Prep
1. What formula is used to calculate slope percentage?
Slope percentage is calculated by multiplying the vertical rise by the
horizontal run.
Slope percentage is calculated by adding the vertical rise to the
horizontal run.
Slope percentage is calculated by dividing the vertical rise by the
horizontal run and multiplying by 100.
Slope percentage is calculated by subtracting the horizontal run from
the vertical rise.
2. The first step in the process of soil erosion is:
infiltration
transport
gullying
deposition
crusting
detachment
3. Describe the conditions under which a stop-work order might be issued
during construction activities.
A stop-work order is issued to finalize project designs.
A stop-work order is issued to change project managers.
, A stop-work order is issued to allow for additional construction
permits.
A stop-work order may be issued when there is a violation of
erosion and sediment control regulations.
4. Describe the significance of the K factor in assessing soil erosion risk.
The K factor assesses the soil's ability to support plant growth.
The K factor indicates how susceptible soil is to erosion based on its
physical and chemical properties.
The K factor determines the soil's nutrient content.
The K factor measures the amount of water retained in the soil.
5. If a construction site has a utility trench that is 120 feet long and is open for
several days, what erosion control measures should be implemented to
comply with regulations?
Cover the trench with soil and stop all work.
Increase the length of the trench to 150 feet.
Implement temporary erosion controls and limit the trench to 100
feet.
Leave the trench open as long as possible.
6. Which activities are typically classified as regulated land disturbing activities?
Minor repairs to existing structures.
Routine agricultural practices.
Activities that disturb the land surface, such as construction or land
clearing.
Planting trees and landscaping.
,7. List the key factors that affect how rainfall influences soil erosion.
Rainfall intensity, duration, and soil type.
Wind speed, soil moisture, and land slope.
Soil pH, organic matter, and land use.
Temperature, humidity, and vegetation cover.
8. Deficiencies found during inspections may be noted informally or
documented on what?
County Personnel documentation Form
Incident Report
Performance Assessment Form
CIR Vol. 1, Chapter 30, 8. Deficiencies Identified Through Inspection
9. Describe how MS-19 regulations impact construction projects in Virginia.
MS-19 regulations do not apply to small construction projects.
MS-19 regulations focus solely on soil erosion prevention techniques.
MS-19 regulations require construction projects to manage post-
development stormwater runoff to minimize environmental impact.
MS-19 regulations only address sediment trap requirements.
10. What is the primary purpose of a temporary vehicular stream crossing in
erosion and sediment control?
To provide access across a stream while minimizing erosion.
To facilitate the construction of permanent structures.
To permanently alter the stream's flow.
, To enhance aquatic habitat.
11. How long does a trench have to be open to be considered 'long term?'
7 days
12 hours
24 hours
3 days
12. Describe the significance of slope percentage in erosion control practices.
Slope percentage is only relevant for aesthetic landscaping and has
no impact on erosion.
Slope percentage is used to calculate the amount of vegetation
needed for landscaping.
Slope percentage is significant in erosion control as it helps
determine the potential for soil erosion based on the steepness of
the slope.
Slope percentage is irrelevant in construction and land-disturbing
activities.
13. If a construction site is found to be causing excessive erosion, what steps
should be taken regarding a stop-work order?
Continue construction while monitoring erosion levels.
Issue a stop-work order to prevent further land disturbance until
compliance is achieved.
Remove all sediment controls and start anew.
Increase the number of workers on site to manage erosion.
– Questions & Answers | Latest Update 2026 | 100% Pass
Guarantee | Exam Prep
1. What formula is used to calculate slope percentage?
Slope percentage is calculated by multiplying the vertical rise by the
horizontal run.
Slope percentage is calculated by adding the vertical rise to the
horizontal run.
Slope percentage is calculated by dividing the vertical rise by the
horizontal run and multiplying by 100.
Slope percentage is calculated by subtracting the horizontal run from
the vertical rise.
2. The first step in the process of soil erosion is:
infiltration
transport
gullying
deposition
crusting
detachment
3. Describe the conditions under which a stop-work order might be issued
during construction activities.
A stop-work order is issued to finalize project designs.
A stop-work order is issued to change project managers.
, A stop-work order is issued to allow for additional construction
permits.
A stop-work order may be issued when there is a violation of
erosion and sediment control regulations.
4. Describe the significance of the K factor in assessing soil erosion risk.
The K factor assesses the soil's ability to support plant growth.
The K factor indicates how susceptible soil is to erosion based on its
physical and chemical properties.
The K factor determines the soil's nutrient content.
The K factor measures the amount of water retained in the soil.
5. If a construction site has a utility trench that is 120 feet long and is open for
several days, what erosion control measures should be implemented to
comply with regulations?
Cover the trench with soil and stop all work.
Increase the length of the trench to 150 feet.
Implement temporary erosion controls and limit the trench to 100
feet.
Leave the trench open as long as possible.
6. Which activities are typically classified as regulated land disturbing activities?
Minor repairs to existing structures.
Routine agricultural practices.
Activities that disturb the land surface, such as construction or land
clearing.
Planting trees and landscaping.
,7. List the key factors that affect how rainfall influences soil erosion.
Rainfall intensity, duration, and soil type.
Wind speed, soil moisture, and land slope.
Soil pH, organic matter, and land use.
Temperature, humidity, and vegetation cover.
8. Deficiencies found during inspections may be noted informally or
documented on what?
County Personnel documentation Form
Incident Report
Performance Assessment Form
CIR Vol. 1, Chapter 30, 8. Deficiencies Identified Through Inspection
9. Describe how MS-19 regulations impact construction projects in Virginia.
MS-19 regulations do not apply to small construction projects.
MS-19 regulations focus solely on soil erosion prevention techniques.
MS-19 regulations require construction projects to manage post-
development stormwater runoff to minimize environmental impact.
MS-19 regulations only address sediment trap requirements.
10. What is the primary purpose of a temporary vehicular stream crossing in
erosion and sediment control?
To provide access across a stream while minimizing erosion.
To facilitate the construction of permanent structures.
To permanently alter the stream's flow.
, To enhance aquatic habitat.
11. How long does a trench have to be open to be considered 'long term?'
7 days
12 hours
24 hours
3 days
12. Describe the significance of slope percentage in erosion control practices.
Slope percentage is only relevant for aesthetic landscaping and has
no impact on erosion.
Slope percentage is used to calculate the amount of vegetation
needed for landscaping.
Slope percentage is significant in erosion control as it helps
determine the potential for soil erosion based on the steepness of
the slope.
Slope percentage is irrelevant in construction and land-disturbing
activities.
13. If a construction site is found to be causing excessive erosion, what steps
should be taken regarding a stop-work order?
Continue construction while monitoring erosion levels.
Issue a stop-work order to prevent further land disturbance until
compliance is achieved.
Remove all sediment controls and start anew.
Increase the number of workers on site to manage erosion.
