Virginia Erosion and Sediment Control Inspector Exam.pdf file:///C:/Users/HP/Desktop/New%20folder/Virginia%20Erosion%20
Virginia Erosion and Sediment Control
Inspector Exam Questions & Answers
1. Erosion Impact Area
Answer area of land NOT ASSOCIATED with a current land-disturbing activity
but contributing to sedimentation
2. How much more soil loss occurs from construction sites versus natural soil
erosion rates? Agricultural land?
Answer 1000 times more than the average natural soilerosion rate.
20 times more than agricultural land.
3. What are 4 erosive forces?
Answer windwater
ice
gravit
y
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,Virginia Erosion and Sediment Control Inspector Exam.pdf file:///C:/Users/HP/Desktop/New%20folder/Virginia%20Erosion%20
4. Name and define 5 stages of soil erosion.
Answer Raindrop- 90% of total soil erosionSheet- the soils ability to infiltrate water
is exceeded and it runs in sheet flow (about100 ft before concentrating), how
sediment gets transported
Rill- when sheet flow begins to concentrate, velocity and turbulence increase, but
easily repaired
Gully-when rills converge, larger than rill and usually requires heavy equipment to
repair
Channel- large volume of water increases the gully, vertical sides are observed orfor
an existing streambed when structural integrity is destroyed
5. What are the factors of rainfall impact?
Answer Kinetic energy is dependent on rainfallamount/intensity, raindrop diameter,
and raindrop velocity
6. What are two damaging effects of rainfall impact?
Answer Causes soil compressionwhich reduces infiltration
Mainly occurs in May-Sept which is when disturbance is most active
2/4
2 of 11 12/16/2024, 5:44
Virginia Erosion and Sediment Control
Inspector Exam Questions & Answers
1. Erosion Impact Area
Answer area of land NOT ASSOCIATED with a current land-disturbing activity
but contributing to sedimentation
2. How much more soil loss occurs from construction sites versus natural soil
erosion rates? Agricultural land?
Answer 1000 times more than the average natural soilerosion rate.
20 times more than agricultural land.
3. What are 4 erosive forces?
Answer windwater
ice
gravit
y
1/4
1 of 11 12/16/2024, 5:44
,Virginia Erosion and Sediment Control Inspector Exam.pdf file:///C:/Users/HP/Desktop/New%20folder/Virginia%20Erosion%20
4. Name and define 5 stages of soil erosion.
Answer Raindrop- 90% of total soil erosionSheet- the soils ability to infiltrate water
is exceeded and it runs in sheet flow (about100 ft before concentrating), how
sediment gets transported
Rill- when sheet flow begins to concentrate, velocity and turbulence increase, but
easily repaired
Gully-when rills converge, larger than rill and usually requires heavy equipment to
repair
Channel- large volume of water increases the gully, vertical sides are observed orfor
an existing streambed when structural integrity is destroyed
5. What are the factors of rainfall impact?
Answer Kinetic energy is dependent on rainfallamount/intensity, raindrop diameter,
and raindrop velocity
6. What are two damaging effects of rainfall impact?
Answer Causes soil compressionwhich reduces infiltration
Mainly occurs in May-Sept which is when disturbance is most active
2/4
2 of 11 12/16/2024, 5:44
