user/BRAINSCAPE1
NPDES Exam Questions and Answers
A+ Graded (2025)
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.
, user/BRAINSCAPE1
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
Who can you contact for a soil survey information? FDOT, FDEP, Water
Management District, Mayor's Office, or NRCS. - CORRECT ANSWER-NRCS
What are the five soil forming factors? - CORRECT ANSWER-Climate,
topography, organisms, parent material, and time.
Waste disposal is a problem for the individual workers and some subcontractors,
but it's no big deal (True / False). - CORRECT ANSWER-False
NPDES Exam Questions and Answers
A+ Graded (2025)
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.
, user/BRAINSCAPE1
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
Who can you contact for a soil survey information? FDOT, FDEP, Water
Management District, Mayor's Office, or NRCS. - CORRECT ANSWER-NRCS
What are the five soil forming factors? - CORRECT ANSWER-Climate,
topography, organisms, parent material, and time.
Waste disposal is a problem for the individual workers and some subcontractors,
but it's no big deal (True / False). - CORRECT ANSWER-False
