SEDIMENTATION AND EROSION
CONTROL CERTIFICATION WITH
COMPLETE SOLUTIONS
Erosion - ANSWER-is the process by which land surface is worn away by the action of
wind, water, and gravity.
Sedimentation - ANSWER-is the settling of soil particles
Soil erosion is classified as either ____ erosion or ____ erosion - ANSWER-wind , water
Water erosion can be classified as either ______ erosion or _____ erosion - ANSWER-
overland , stream
Four processes of overland erosion - ANSWER-splash erosion, sheet erosion, rill
erosion, gully erosion
Four principle factors influencing soil erosion are - ANSWER-soil characteristics,
vegetative cover, topography, climate
Physical effects of erosion and sedimentation - ANSWER-increase flooding, reduce
hydraulic capacity, increased maintenance of storm water systems, increased water
treatment costs, decreased recreational value
Biological effects of erosion and sedimentation - ANSWER-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 -
ANSWER-extent, duration
Apply __________ practices to protect the disturbed area from off-site runoff and to
protect off-site areas from sediment damage - ANSWER-perimeter control
Apply ________ practices to prevent excessive on site damage - ANSWER-erosion
control
Keep runoff velocities _____ and _____ runoff on site - ANSWER-low , retain
Stabilize disturbed areas ________ after final grading - ANSWER-inmediately
, Implement a thorough ____ and ____ (inspection) program - ANSWER-maintenance,
follow up
Type A soils have ___ infiltration rates and ___ runoff potential. Examples - ANSWER-
high, low (Sand)
Type D soils have _____ infiltration rates and _______ runoff potential. Examples -
ANSWER-low, high (muck, clay)
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities - ANSWER-demolition
Any type of soil disturbance over 1 acre must get ______ permit - ANSWER-CGP
(Construction Generic Permit)
For proper installation of silt fence a trench ____ by _____ must be excavated. This will
allow_______ of fabric to extend into the ground for back-filling and compaction -
ANSWER-4, 4, 8
Max drainage area for an inlet protection is ______ - ANSWER-1 acre
Purpose of a sediment trap is to _____ turbid water - ANSWER-detain
Max drainage area for a temporary sediment trap is _____ - ANSWER-5 acres
Initial storage capacity for a sediment trap is _______ yards per acre or _______
ft^3/acre - ANSWER-134 cubic, 3600
Sediment basin is required for drainage areas more than ______ - ANSWER-5 acres
In a sediment trap or basin baffles are used to ______ - ANSWER-increase flow length
A CGP is required for projects that disturb _____ or more acres of land - ANSWER-1
The CGP permit requires inspections how often? - ANSWER-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 - ANSWER-4
The CGP permit requires sediment basins for areas _____ or more - ANSWER-10
acres
Any BPM that collects sediment must be cleaned before it reaches _____ of it's capacity
- ANSWER-50%
CONTROL CERTIFICATION WITH
COMPLETE SOLUTIONS
Erosion - ANSWER-is the process by which land surface is worn away by the action of
wind, water, and gravity.
Sedimentation - ANSWER-is the settling of soil particles
Soil erosion is classified as either ____ erosion or ____ erosion - ANSWER-wind , water
Water erosion can be classified as either ______ erosion or _____ erosion - ANSWER-
overland , stream
Four processes of overland erosion - ANSWER-splash erosion, sheet erosion, rill
erosion, gully erosion
Four principle factors influencing soil erosion are - ANSWER-soil characteristics,
vegetative cover, topography, climate
Physical effects of erosion and sedimentation - ANSWER-increase flooding, reduce
hydraulic capacity, increased maintenance of storm water systems, increased water
treatment costs, decreased recreational value
Biological effects of erosion and sedimentation - ANSWER-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 -
ANSWER-extent, duration
Apply __________ practices to protect the disturbed area from off-site runoff and to
protect off-site areas from sediment damage - ANSWER-perimeter control
Apply ________ practices to prevent excessive on site damage - ANSWER-erosion
control
Keep runoff velocities _____ and _____ runoff on site - ANSWER-low , retain
Stabilize disturbed areas ________ after final grading - ANSWER-inmediately
, Implement a thorough ____ and ____ (inspection) program - ANSWER-maintenance,
follow up
Type A soils have ___ infiltration rates and ___ runoff potential. Examples - ANSWER-
high, low (Sand)
Type D soils have _____ infiltration rates and _______ runoff potential. Examples -
ANSWER-low, high (muck, clay)
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities - ANSWER-demolition
Any type of soil disturbance over 1 acre must get ______ permit - ANSWER-CGP
(Construction Generic Permit)
For proper installation of silt fence a trench ____ by _____ must be excavated. This will
allow_______ of fabric to extend into the ground for back-filling and compaction -
ANSWER-4, 4, 8
Max drainage area for an inlet protection is ______ - ANSWER-1 acre
Purpose of a sediment trap is to _____ turbid water - ANSWER-detain
Max drainage area for a temporary sediment trap is _____ - ANSWER-5 acres
Initial storage capacity for a sediment trap is _______ yards per acre or _______
ft^3/acre - ANSWER-134 cubic, 3600
Sediment basin is required for drainage areas more than ______ - ANSWER-5 acres
In a sediment trap or basin baffles are used to ______ - ANSWER-increase flow length
A CGP is required for projects that disturb _____ or more acres of land - ANSWER-1
The CGP permit requires inspections how often? - ANSWER-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 - ANSWER-4
The CGP permit requires sediment basins for areas _____ or more - ANSWER-10
acres
Any BPM that collects sediment must be cleaned before it reaches _____ of it's capacity
- ANSWER-50%
