Virginia Erosion and Sediment Control Inspector Exam Question
And
swersAn-
With Verified
Solutions!!
1. Erosion Impact Area area of land NOT ASSOCIATED with a current land-
disturbing
activity but contributing to sedimentation
2. How much more soil loss 1000 times more than the average natural soil erosion
oc- curs from rate. 20 times more than agricultural land.
construction sites
versus natural soil
erosion rates?
Agricultural land?
3. What are 4 erosive forces? wind
water
ice
gravity
4. Name and define 5 stages Raindrop- 90% of total soil erosion
of soil erosion.
Sheet- the soils ability to infiltrate water is exceeded
and it runs in sheet flow (about 100 ft before
concentrating), how sediment gets transported
Rill- when sheet flow begins to concentrate, velocity and
turbu- lence 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 or for an existing streambed
when structural integrity is destroyed
5. What are the factors of rainfall Kinetic energy is dependent on rainfall
amount/intensity, rain-
impact? ef- fects of rainfall impact?
6. What are two damaging
1/
11
, Virginia Erosion and Sediment Control Inspector Exam Question
And
swers An-With Verified
Solutions!!
rop diameter, and raindrop velocity
auses soil compression which reduces
infiltration
Mainly occurs in May-Sept which is when
disturbance is most active
2/
11
And
swersAn-
With Verified
Solutions!!
1. Erosion Impact Area area of land NOT ASSOCIATED with a current land-
disturbing
activity but contributing to sedimentation
2. How much more soil loss 1000 times more than the average natural soil erosion
oc- curs from rate. 20 times more than agricultural land.
construction sites
versus natural soil
erosion rates?
Agricultural land?
3. What are 4 erosive forces? wind
water
ice
gravity
4. Name and define 5 stages Raindrop- 90% of total soil erosion
of soil erosion.
Sheet- the soils ability to infiltrate water is exceeded
and it runs in sheet flow (about 100 ft before
concentrating), how sediment gets transported
Rill- when sheet flow begins to concentrate, velocity and
turbu- lence 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 or for an existing streambed
when structural integrity is destroyed
5. What are the factors of rainfall Kinetic energy is dependent on rainfall
amount/intensity, rain-
impact? ef- fects of rainfall impact?
6. What are two damaging
1/
11
, Virginia Erosion and Sediment Control Inspector Exam Question
And
swers An-With Verified
Solutions!!
rop diameter, and raindrop velocity
auses soil compression which reduces
infiltration
Mainly occurs in May-Sept which is when
disturbance is most active
2/
11
