Sedimentation and erosion control
certification exam with complete
solutions | solved
Erosion CORRECT ANSWERS is the process by which land surface is worn away by
the action of wind, water, and gravity.
Sedimentation CORRECT ANSWERS is the settling of soil particles
Soil erosion is classified as either ____ erosion or ____ erosion CORRECT ANSWERS
wind , water
Water erosion can be classified as either ______ erosion or _____ erosion CORRECT
ANSWERS overland , stream
Four processes of overland erosion CORRECT ANSWERS splash erosion, sheet
erosion, rill erosion, gully erosion
Four principle factors influencing soil erosion are CORRECT ANSWERS soil
characteristics, vegetative cover, topography, climate
Physical effects of erosion and sedimentation CORRECT ANSWERS increase flooding,
reduce hydraulic capacity, increased maintenance of storm water systems, increased
water treatment costs, decreased recreational value
Biological effects of erosion and sedimentation CORRECT ANSWERS reduced light for
aquatic plants, clogs fish gills, impairs spawning, disrupts food chain, blankets bottom,
disrupts ecosystem
Minimize the _______ of the area exposed at one time and the ______ of exposure
CORRECT ANSWERS extent, duration
Apply __________ practices to protect the disturbed area from off-site runoff and to
protect off-site areas from sediment damage CORRECT ANSWERS perimeter control
Apply ________ practices to prevent excessive on site damage CORRECT ANSWERS
erosion control
Keep runoff velocities _____ and _____ runoff on site CORRECT ANSWERS low ,
retain
Stabilize disturbed areas ________ after final grading CORRECT ANSWERS
inmediately
, Implement a thorough ____ and ____ (inspection) program CORRECT ANSWERS
maintenance, follow up
Type A soils have ___ infiltration rates and ___ runoff potential. Examples CORRECT
ANSWERS high, low (Sand)
Type D soils have _____ infiltration rates and _______ runoff potential. Examples
CORRECT ANSWERS low, high (muck, clay)
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities CORRECT ANSWERS demolition
Any type of soil disturbance over 1 acre must get ______ permit CORRECT ANSWERS
CGP (Construction Generic Permit)
A CGP is required for projects that disturb _____ or more acres of land CORRECT
ANSWERS 1
The CGP permit requires inspections how often? CORRECT ANSWERS weekly and
within 24 hours of the end of a storm 1/2 inch or greater
A storm water event with a ______ hour break in between is still considered one storm
water event CORRECT ANSWERS 4
The CGP permit requires sediment basins for areas _____ or more CORRECT
ANSWERS 10 acres
Any BPM that collects sediment must be cleaned before it reaches _____ of it's capacity
CORRECT ANSWERS 50%
Never service construction equipment near a live stream, use storm water sewers
instead T/F CORRECT ANSWERS False
A temporary gravel construction entrance must extend the full width of the entrance. It
must be at least _____ ft long and _____ in thick. Aggregate should be _____ in stone
or FDOT No. _____ stone CORRECT ANSWERS 50, 6, 2, 1
Prior to installing gravel entrance ______ should be placed on the ground and
maintenance should be performed when the voids are full of ______ CORRECT
ANSWERS geotextile, sediment
Max drainage are for a silt fence under _____ flow conditions is ____ acre per 100 ft of
barrier length CORRECT ANSWERS sheet, 1/4
The average usable life of a silt fence is ____ months CORRECT ANSWERS 6
certification exam with complete
solutions | solved
Erosion CORRECT ANSWERS is the process by which land surface is worn away by
the action of wind, water, and gravity.
Sedimentation CORRECT ANSWERS is the settling of soil particles
Soil erosion is classified as either ____ erosion or ____ erosion CORRECT ANSWERS
wind , water
Water erosion can be classified as either ______ erosion or _____ erosion CORRECT
ANSWERS overland , stream
Four processes of overland erosion CORRECT ANSWERS splash erosion, sheet
erosion, rill erosion, gully erosion
Four principle factors influencing soil erosion are CORRECT ANSWERS soil
characteristics, vegetative cover, topography, climate
Physical effects of erosion and sedimentation CORRECT ANSWERS increase flooding,
reduce hydraulic capacity, increased maintenance of storm water systems, increased
water treatment costs, decreased recreational value
Biological effects of erosion and sedimentation CORRECT ANSWERS reduced light for
aquatic plants, clogs fish gills, impairs spawning, disrupts food chain, blankets bottom,
disrupts ecosystem
Minimize the _______ of the area exposed at one time and the ______ of exposure
CORRECT ANSWERS extent, duration
Apply __________ practices to protect the disturbed area from off-site runoff and to
protect off-site areas from sediment damage CORRECT ANSWERS perimeter control
Apply ________ practices to prevent excessive on site damage CORRECT ANSWERS
erosion control
Keep runoff velocities _____ and _____ runoff on site CORRECT ANSWERS low ,
retain
Stabilize disturbed areas ________ after final grading CORRECT ANSWERS
inmediately
, Implement a thorough ____ and ____ (inspection) program CORRECT ANSWERS
maintenance, follow up
Type A soils have ___ infiltration rates and ___ runoff potential. Examples CORRECT
ANSWERS high, low (Sand)
Type D soils have _____ infiltration rates and _______ runoff potential. Examples
CORRECT ANSWERS low, high (muck, clay)
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities CORRECT ANSWERS demolition
Any type of soil disturbance over 1 acre must get ______ permit CORRECT ANSWERS
CGP (Construction Generic Permit)
A CGP is required for projects that disturb _____ or more acres of land CORRECT
ANSWERS 1
The CGP permit requires inspections how often? CORRECT ANSWERS weekly and
within 24 hours of the end of a storm 1/2 inch or greater
A storm water event with a ______ hour break in between is still considered one storm
water event CORRECT ANSWERS 4
The CGP permit requires sediment basins for areas _____ or more CORRECT
ANSWERS 10 acres
Any BPM that collects sediment must be cleaned before it reaches _____ of it's capacity
CORRECT ANSWERS 50%
Never service construction equipment near a live stream, use storm water sewers
instead T/F CORRECT ANSWERS False
A temporary gravel construction entrance must extend the full width of the entrance. It
must be at least _____ ft long and _____ in thick. Aggregate should be _____ in stone
or FDOT No. _____ stone CORRECT ANSWERS 50, 6, 2, 1
Prior to installing gravel entrance ______ should be placed on the ground and
maintenance should be performed when the voids are full of ______ CORRECT
ANSWERS geotextile, sediment
Max drainage are for a silt fence under _____ flow conditions is ____ acre per 100 ft of
barrier length CORRECT ANSWERS sheet, 1/4
The average usable life of a silt fence is ____ months CORRECT ANSWERS 6
