SEDIMENTATION AND EROSION CONTROL
CERTIFICATION
Erosion - Answers - is the process by which land surface is worn away by the action of
wind, water, and gravity.
Sedimentation - Answers - is the settling of soil particles
Soil erosion is classified as either ____ erosion or ____ erosion - Answers - wind ,
water
Water erosion can be classified as either ______ erosion or _____ erosion - Answers -
overland , stream
Four processes of overland erosion - Answers - splash erosion, sheet erosion, rill
erosion, gully erosion
Four principle factors influencing soil erosion are - Answers - soil characteristics,
vegetative cover, topography, climate
Physical effects of erosion and sedimentation - 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 - 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 -
Answers - extent, duration
Apply __________ practices to protect the disturbed area from off-site runoff and to
protect off-site areas from sediment damage - Answers - perimeter control
Apply ________ practices to prevent excessive on site damage - Answers - erosion
control
Keep runoff velocities _____ and _____ runoff on site - Answers - low , retain
Stabilize disturbed areas ________ after final grading - Answers - inmediately
Implement a thorough ____ and ____ (inspection) program - Answers - maintenance,
follow up
, Type A soils have ___ infiltration rates and ___ runoff potential. Examples - Answers -
high, low (Sand)
Type D soils have _____ infiltration rates and _______ runoff potential. Examples -
Answers - low, high (muck, clay)
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities - Answers - demolition
Any type of soil disturbance over 1 acre must get ______ permit - Answers - CGP
(Construction Generic Permit)
A CGP is required for projects that disturb _____ or more acres of land - Answers - 1
The CGP permit requires inspections how often? - 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 - Answers - 4
Max drainage are for a silt fence under _____ flow conditions is ____ acre per 100 ft of
barrier length - Answers - sheet, 1/4
The average usable life of a silt fence is ____ months - Answers - 6
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 -
Answers - 4, 4, 8
Max drainage area for an inlet protection is ______ - Answers - 1 acre
Purpose of a sediment trap is to _____ turbid water - Answers - detain
Max drainage area for a temporary sediment trap is _____ - Answers - 5 acres
Initial storage capacity for a sediment trap is _______ yards per acre or _______
ft^3/acre - Answers - 134 cubic, 3600
Sediment basin is required for drainage areas more than ______ - Answers - 5 acres
In a sediment trap or basin baffles are used to ______ - Answers - increase flow length
A diversion earthen dike shall be used to ________ into a temporary slope drain -
Answers - direct stormwater
CERTIFICATION
Erosion - Answers - is the process by which land surface is worn away by the action of
wind, water, and gravity.
Sedimentation - Answers - is the settling of soil particles
Soil erosion is classified as either ____ erosion or ____ erosion - Answers - wind ,
water
Water erosion can be classified as either ______ erosion or _____ erosion - Answers -
overland , stream
Four processes of overland erosion - Answers - splash erosion, sheet erosion, rill
erosion, gully erosion
Four principle factors influencing soil erosion are - Answers - soil characteristics,
vegetative cover, topography, climate
Physical effects of erosion and sedimentation - 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 - 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 -
Answers - extent, duration
Apply __________ practices to protect the disturbed area from off-site runoff and to
protect off-site areas from sediment damage - Answers - perimeter control
Apply ________ practices to prevent excessive on site damage - Answers - erosion
control
Keep runoff velocities _____ and _____ runoff on site - Answers - low , retain
Stabilize disturbed areas ________ after final grading - Answers - inmediately
Implement a thorough ____ and ____ (inspection) program - Answers - maintenance,
follow up
, Type A soils have ___ infiltration rates and ___ runoff potential. Examples - Answers -
high, low (Sand)
Type D soils have _____ infiltration rates and _______ runoff potential. Examples -
Answers - low, high (muck, clay)
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities - Answers - demolition
Any type of soil disturbance over 1 acre must get ______ permit - Answers - CGP
(Construction Generic Permit)
A CGP is required for projects that disturb _____ or more acres of land - Answers - 1
The CGP permit requires inspections how often? - 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 - Answers - 4
Max drainage are for a silt fence under _____ flow conditions is ____ acre per 100 ft of
barrier length - Answers - sheet, 1/4
The average usable life of a silt fence is ____ months - Answers - 6
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 -
Answers - 4, 4, 8
Max drainage area for an inlet protection is ______ - Answers - 1 acre
Purpose of a sediment trap is to _____ turbid water - Answers - detain
Max drainage area for a temporary sediment trap is _____ - Answers - 5 acres
Initial storage capacity for a sediment trap is _______ yards per acre or _______
ft^3/acre - Answers - 134 cubic, 3600
Sediment basin is required for drainage areas more than ______ - Answers - 5 acres
In a sediment trap or basin baffles are used to ______ - Answers - increase flow length
A diversion earthen dike shall be used to ________ into a temporary slope drain -
Answers - direct stormwater
