NPDES Class Questions and Correct
Detailed Answers (Verified
Answers)
QUIZ:Erosion
✓✓~ is the process by which the land surface is worn away by
the action of wind, water, and gravity.
QUIZ:
Sedimentation
✓✓~ is the settling out of soil particles transported by water and
wind.
QUIZ:
Soil erosion can be classified as 2 types. What are they?
✓✓~ Wind and Water.
QUIZ:
What are the two sources of Soil erosion.
✓✓~ Natural and Manmade
QUIZ:
Water erosion can be classified as two type of erosions.
What are they?
,✓✓~ Overland and Stream/Channel erosion.
QUIZ:
Four process of overland erosion are?
✓✓~ Splash, sheet, rill, and gully erosion.
QUIZ:
Four principle factors influencing soil erosion are?
✓✓~ Soil characteristics, vegetative cover, topography, and
climate.
QUIZ:
List three physical effect of erosion and sedimentation:
✓✓~ Increased flooding reduced hydraulic capacity in rivers,
and streams; increased maintenance of stormwater systems.;
increased water treatments cost; and decreased recreational
value.
QUIZ:
List three biological effect of erosion and sedimentation:
✓✓~ Reduced light for aquatic plants; clogs fish gills; impairs
spawning; disrupts food chain; blankets bottom, suppresses aquatic
life; and disrupts ecosystem.
, QUIZ:
Planning the development to fit the terrain using the
particular:
✓✓~ Topography; soils; drainage patterns; natural vegetation of
the site; and minimize the extent of the area exposed at one time
and the duration of exposure.
QUIZ:
Perimeter Control Practices
✓✓~ What you apply to protect the disturbed area from off-site
runoff and to protect off-site areas from sediment damage.
QUIZ:
Erosion Control Practices
✓✓~ What you apply to prevent excessive on-site damage.
QUIZ:
Keep runoff velocities _____ and _______ runoff on the site
✓✓~ Low and retain
QUIZ:
When do you stabilize disturbed areas after final grading to
prevent raindrop impacts from causing erosion.
✓✓~ Immediately
Detailed Answers (Verified
Answers)
QUIZ:Erosion
✓✓~ is the process by which the land surface is worn away by
the action of wind, water, and gravity.
QUIZ:
Sedimentation
✓✓~ is the settling out of soil particles transported by water and
wind.
QUIZ:
Soil erosion can be classified as 2 types. What are they?
✓✓~ Wind and Water.
QUIZ:
What are the two sources of Soil erosion.
✓✓~ Natural and Manmade
QUIZ:
Water erosion can be classified as two type of erosions.
What are they?
,✓✓~ Overland and Stream/Channel erosion.
QUIZ:
Four process of overland erosion are?
✓✓~ Splash, sheet, rill, and gully erosion.
QUIZ:
Four principle factors influencing soil erosion are?
✓✓~ Soil characteristics, vegetative cover, topography, and
climate.
QUIZ:
List three physical effect of erosion and sedimentation:
✓✓~ Increased flooding reduced hydraulic capacity in rivers,
and streams; increased maintenance of stormwater systems.;
increased water treatments cost; and decreased recreational
value.
QUIZ:
List three biological effect of erosion and sedimentation:
✓✓~ Reduced light for aquatic plants; clogs fish gills; impairs
spawning; disrupts food chain; blankets bottom, suppresses aquatic
life; and disrupts ecosystem.
, QUIZ:
Planning the development to fit the terrain using the
particular:
✓✓~ Topography; soils; drainage patterns; natural vegetation of
the site; and minimize the extent of the area exposed at one time
and the duration of exposure.
QUIZ:
Perimeter Control Practices
✓✓~ What you apply to protect the disturbed area from off-site
runoff and to protect off-site areas from sediment damage.
QUIZ:
Erosion Control Practices
✓✓~ What you apply to prevent excessive on-site damage.
QUIZ:
Keep runoff velocities _____ and _______ runoff on the site
✓✓~ Low and retain
QUIZ:
When do you stabilize disturbed areas after final grading to
prevent raindrop impacts from causing erosion.
✓✓~ Immediately
