NPDES Class – Questions With Expert Solutions
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Practice questions for this set
Learn 1 /7 Study using Learn
What you apply to prevent excessive on-site damage.
Choose an answer
1 Erosion Control Practices 2 Erosion
When do you stabilize disturbed areas
Water erosion can be classified as two
3 after final grading to prevent raindrop 4
type of erosions. What are they?
impacts from causing erosion.
Don't know?
Terms in this set (126)
Erosion is the process by which the land surface is worn away
by the action of wind, water, and gravity.
Sedimentation is the settling out of soil particles transported by
water and wind.
,Soil erosion can be classified as 2 Wind and Water.
types. What are they?
What are the two sources of Soil Natural and Manmade
erosion.
Water erosion can be classified as two Overland and Stream/Channel erosion.
type of erosions. What are they?
Four process of overland erosion are? Splash, sheet, rill, and gully erosion.
Four principle factors influencing soil Soil characteristics, vegetative cover, topography,
erosion are? and climate.
List three physical effect of erosion Increased flooding reduced hydraulic capacity in
and sedimentation: rivers, and streams; increased maintenance of
stormwater systems.; increased water treatments
cost; and decreased recreational value.
List three biological effect of erosion Reduced light for aquatic plants; clogs fish gills;
and sedimentation: impairs spawning; disrupts food chain; blankets
bottom, suppresses aquatic life; and disrupts
ecosystem.
Planning the development to fit the Topography; soils; drainage patterns; natural
terrain using the particular: vegetation of the site; and minimize the extent of the
area exposed at one time and the duration of
exposure.
Perimeter Control Practices What you apply to protect the disturbed area from
off-site runoff and to protect off-site areas from
sediment damage.
Erosion Control Practices What you apply to prevent excessive on-site
damage.
Keep runoff velocities _____ and _______ Low and retain
runoff on the site
, When do you stabilize disturbed areas Immediately
after final grading to prevent raindrop
impacts from causing erosion.
Implement a thorough _____ and maintenance and follow up
_____(inspection) program as required in
the Construction Generic Permit
(CGP).
Soil particles smaller than 0.002 mm clay and muck
are classified as ____ and along with ____
are the two soil types that cause the
most erosion/turbidity problems in
Florida and the World.
Soils in the Type A hydrologic group high and low
have ____ infiltration rates and ____
runoff potential even when
thoroughly wetted.
Soils in the Type D hydrologic group low and high
have very ____ infiltration rates and ____
runoff potential when thoroughly
wetted.
What is the rainfall erosion index? The rainfall erosion index is the only factor in the
Universal Soil Loss Equation which is beyond the
developer's control.
What are the factors that can most length & gradient, and cover factor
easily be manipulated by the
developer?
The RUSLE is used on our Soil Loss
construction sites to predict______
Stabilize disturbed lands immediately Money
to save what?
Save Groups
Practice questions for this set
Learn 1 /7 Study using Learn
What you apply to prevent excessive on-site damage.
Choose an answer
1 Erosion Control Practices 2 Erosion
When do you stabilize disturbed areas
Water erosion can be classified as two
3 after final grading to prevent raindrop 4
type of erosions. What are they?
impacts from causing erosion.
Don't know?
Terms in this set (126)
Erosion is the process by which the land surface is worn away
by the action of wind, water, and gravity.
Sedimentation is the settling out of soil particles transported by
water and wind.
,Soil erosion can be classified as 2 Wind and Water.
types. What are they?
What are the two sources of Soil Natural and Manmade
erosion.
Water erosion can be classified as two Overland and Stream/Channel erosion.
type of erosions. What are they?
Four process of overland erosion are? Splash, sheet, rill, and gully erosion.
Four principle factors influencing soil Soil characteristics, vegetative cover, topography,
erosion are? and climate.
List three physical effect of erosion Increased flooding reduced hydraulic capacity in
and sedimentation: rivers, and streams; increased maintenance of
stormwater systems.; increased water treatments
cost; and decreased recreational value.
List three biological effect of erosion Reduced light for aquatic plants; clogs fish gills;
and sedimentation: impairs spawning; disrupts food chain; blankets
bottom, suppresses aquatic life; and disrupts
ecosystem.
Planning the development to fit the Topography; soils; drainage patterns; natural
terrain using the particular: vegetation of the site; and minimize the extent of the
area exposed at one time and the duration of
exposure.
Perimeter Control Practices What you apply to protect the disturbed area from
off-site runoff and to protect off-site areas from
sediment damage.
Erosion Control Practices What you apply to prevent excessive on-site
damage.
Keep runoff velocities _____ and _______ Low and retain
runoff on the site
, When do you stabilize disturbed areas Immediately
after final grading to prevent raindrop
impacts from causing erosion.
Implement a thorough _____ and maintenance and follow up
_____(inspection) program as required in
the Construction Generic Permit
(CGP).
Soil particles smaller than 0.002 mm clay and muck
are classified as ____ and along with ____
are the two soil types that cause the
most erosion/turbidity problems in
Florida and the World.
Soils in the Type A hydrologic group high and low
have ____ infiltration rates and ____
runoff potential even when
thoroughly wetted.
Soils in the Type D hydrologic group low and high
have very ____ infiltration rates and ____
runoff potential when thoroughly
wetted.
What is the rainfall erosion index? The rainfall erosion index is the only factor in the
Universal Soil Loss Equation which is beyond the
developer's control.
What are the factors that can most length & gradient, and cover factor
easily be manipulated by the
developer?
The RUSLE is used on our Soil Loss
construction sites to predict______
Stabilize disturbed lands immediately Money
to save what?
