NPDES Class Exam Questions With
Correct Answers
Erosion - CORRECT ANSWER✔✔-is the process by which the land surface is worn
| | | | | | | | | | | | |
away by the action of wind, water, and gravity.
| | | | | | | |
Sedimentation - CORRECT ANSWER✔✔-is the settling out of soil particles
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transported by water and wind. | | | |
Soil erosion can be classified as 2 types. What are they? - CORRECT ANSWER✔✔-
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Wind and Water.
| |
What are the two sources of Soil erosion. - CORRECT ANSWER✔✔-Natural and
| | | | | | | | | | | |
Manmade
Water erosion can be classified as two type of erosions. What are they? -
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CORRECT ANSWER✔✔-Overland and Stream/Channel erosion.
| | | |
Four process of overland erosion are? - CORRECT ANSWER✔✔-Splash, sheet, rill,
| | | | | | | | | | |
and gully erosion.
| |
Four principle factors influencing soil erosion are? - CORRECT ANSWER✔✔-Soil
| | | | | | | | | |
characteristics, vegetative cover, topography, and climate.| | | | |
,List three physical effect of erosion and sedimentation: - CORRECT ANSWER✔✔-
| | | | | | | | | |
Increased flooding reduced hydraulic capacity in rivers, and streams; increased
| | | | | | | | | |
maintenance of stormwater systems.; increased water treatments cost; and
| | | | | | | | |
decreased recreational value. | |
List three biological effect of erosion and sedimentation: - CORRECT ANSWER✔✔-
| | | | | | | | | |
Reduced light for aquatic plants; clogs fish gills; impairs spawning; disrupts food
| | | | | | | | | | | |
chain; blankets bottom, suppresses aquatic life; and disrupts ecosystem.
| | | | | | | |
Planning the development to fit the terrain using the particular: - CORRECT
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ANSWER✔✔-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.
Perimeter Control Practices - CORRECT ANSWER✔✔-What you apply to protect
| | | | | | | | | |
the disturbed area from off-site runoff and to protect off-site areas from sediment
| | | | | | | | | | | |
damage.
|
Erosion Control Practices - CORRECT ANSWER✔✔-What you apply to prevent
| | | | | | | | | |
excessive on-site damage. | |
Keep runoff velocities _____ and _______ runoff on the site - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-Low and retain | |
When do you stabilize disturbed areas after final grading to prevent raindrop
| | | | | | | | | | | |
impacts from causing erosion. - CORRECT ANSWER✔✔-Immediately
| | | | | |
, Implement a thorough _____ and _____(inspection) program as required in the
| | | | | | | | | | |
Construction Generic Permit (CGP). - CORRECT ANSWER✔✔-maintenance and
| | | | | | | |
follow up |
Soil particles smaller than 0.002 mm are classified as ____ and along with ____
| | | | | | | | | | | | | |
are the two soil types that cause the most erosion/turbidity problems in Florida
| | | | | | | | | | | | |
and the World. - CORRECT ANSWER✔✔-clay and muck
| | | | | | |
Soils in the Type A hydrologic group have ____ infiltration rates and ____ runoff
| | | | | | | | | | | | | |
potential even when thoroughly wetted. - CORRECT ANSWER✔✔-high and low
| | | | | | | | |
Soils in the Type D hydrologic group have very ____ infiltration rates and ____
| | | | | | | | | | | | | |
runoff potential when thoroughly wetted. - CORRECT ANSWER✔✔-low and high
| | | | | | | | |
What is the rainfall erosion index? - CORRECT ANSWER✔✔-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 easily be manipulated by the developer? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-length & gradient, and cover factor
| | | | | |
The RUSLE is used on our construction sites to predict______ - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-Soil Loss |
Stabilize disturbed lands immediately to save what? - CORRECT ANSWER✔✔-
| | | | | | | | |
Money
Correct Answers
Erosion - CORRECT ANSWER✔✔-is the process by which the land surface is worn
| | | | | | | | | | | | |
away by the action of wind, water, and gravity.
| | | | | | | |
Sedimentation - CORRECT ANSWER✔✔-is the settling out of soil particles
| | | | | | | | | |
transported by water and wind. | | | |
Soil erosion can be classified as 2 types. What are they? - CORRECT ANSWER✔✔-
| | | | | | | | | | | | |
Wind and Water.
| |
What are the two sources of Soil erosion. - CORRECT ANSWER✔✔-Natural and
| | | | | | | | | | | |
Manmade
Water erosion can be classified as two type of erosions. What are they? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Overland and Stream/Channel erosion.
| | | |
Four process of overland erosion are? - CORRECT ANSWER✔✔-Splash, sheet, rill,
| | | | | | | | | | |
and gully erosion.
| |
Four principle factors influencing soil erosion are? - CORRECT ANSWER✔✔-Soil
| | | | | | | | | |
characteristics, vegetative cover, topography, and climate.| | | | |
,List three physical effect of erosion and sedimentation: - CORRECT ANSWER✔✔-
| | | | | | | | | |
Increased flooding reduced hydraulic capacity in rivers, and streams; increased
| | | | | | | | | |
maintenance of stormwater systems.; increased water treatments cost; and
| | | | | | | | |
decreased recreational value. | |
List three biological effect of erosion and sedimentation: - CORRECT ANSWER✔✔-
| | | | | | | | | |
Reduced light for aquatic plants; clogs fish gills; impairs spawning; disrupts food
| | | | | | | | | | | |
chain; blankets bottom, suppresses aquatic life; and disrupts ecosystem.
| | | | | | | |
Planning the development to fit the terrain using the particular: - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-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.
Perimeter Control Practices - CORRECT ANSWER✔✔-What you apply to protect
| | | | | | | | | |
the disturbed area from off-site runoff and to protect off-site areas from sediment
| | | | | | | | | | | |
damage.
|
Erosion Control Practices - CORRECT ANSWER✔✔-What you apply to prevent
| | | | | | | | | |
excessive on-site damage. | |
Keep runoff velocities _____ and _______ runoff on the site - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-Low and retain | |
When do you stabilize disturbed areas after final grading to prevent raindrop
| | | | | | | | | | | |
impacts from causing erosion. - CORRECT ANSWER✔✔-Immediately
| | | | | |
, Implement a thorough _____ and _____(inspection) program as required in the
| | | | | | | | | | |
Construction Generic Permit (CGP). - CORRECT ANSWER✔✔-maintenance and
| | | | | | | |
follow up |
Soil particles smaller than 0.002 mm are classified as ____ and along with ____
| | | | | | | | | | | | | |
are the two soil types that cause the most erosion/turbidity problems in Florida
| | | | | | | | | | | | |
and the World. - CORRECT ANSWER✔✔-clay and muck
| | | | | | |
Soils in the Type A hydrologic group have ____ infiltration rates and ____ runoff
| | | | | | | | | | | | | |
potential even when thoroughly wetted. - CORRECT ANSWER✔✔-high and low
| | | | | | | | |
Soils in the Type D hydrologic group have very ____ infiltration rates and ____
| | | | | | | | | | | | | |
runoff potential when thoroughly wetted. - CORRECT ANSWER✔✔-low and high
| | | | | | | | |
What is the rainfall erosion index? - CORRECT ANSWER✔✔-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 easily be manipulated by the developer? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-length & gradient, and cover factor
| | | | | |
The RUSLE is used on our construction sites to predict______ - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-Soil Loss |
Stabilize disturbed lands immediately to save what? - CORRECT ANSWER✔✔-
| | | | | | | | |
Money
