Sedimentation and erosion control certification
2 soil amendments - ANS-Fertilizer, lime
A CGP is required for projects that disturb _____ or more acres of land - ANS-1
A diversion earthen dike shall be used to ________ into a temporary slope drain - ANS-direct
stormwater
A floating turbidity curtain is designed to contain sediment laden water and allow enough ____
for sediments to settle out to suspension - ANS-time
A retention basin is designed to ____ stormwater on site and allow time for ______ into the
ground. They do not have an _______ - ANS-retain, percolation, outlet
A stand of vegetation is considered viable and established after hours long? - ANS-1 year
A storm water event with a ______ hour break in between is still considered one storm water
event - ANS-4
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 - ANS-50, 6, 2, 1
A type III floating turbidity curtain may be used in considerable flow conditions meaning less
than _____ ft/s or _____ knots - ANS-5, 3
Anchor lines shall be attached to ____ not to the bottom of the curtain float - ANS-buoys
Any BPM that collects sediment must be cleaned before it reaches _____ of it's capacity -
ANS-50%
Any type of soil disturbance over 1 acre must get ______ permit - ANS-CGP (Construction
Generic Permit)
Apply ________ practices to prevent excessive on site damage - ANS-erosion control
Apply __________ practices to protect the disturbed area from off-site runoff and to protect
off-site areas from sediment damage - ANS-perimeter control
Based on EPA guidance, FDEP has determined that ______ also meet the definition of
construction activities - ANS-demolition
, Before discharge water should be checked for____ - ANS-turbidity and pH
Biological effects of erosion and sedimentation - ANS-reduced light for aquatic plants, clogs fish
gills, impairs spawning, disrupts food chain, blankets bottom, disrupts ecosystem
Compacting in large areas should be done in ______ inch lifts and compacting over pipes
should be done in _____ inch lifts. - ANS-6-8, 2-4
Construction of a retention basin with heavy equipment, special care must be taken to avoid
________ - ANS-excessive compaction
Detention basin inlets and other CS should be inspected after _____ - ANS-each major storm
event
Erosion - ANS-is the process by which land surface is worn away by the action of wind, water,
and gravity.
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 - ANS-4, 4, 8
Four principle factors influencing soil erosion are - ANS-soil characteristics, vegetative cover,
topography, climate
Four processes of overland erosion - ANS-splash erosion, sheet erosion, rill erosion, gully
erosion
Implement a thorough ____ and ____ (inspection) program - ANS-maintenance, follow up
In a sediment trap or basin baffles are used to ______ - ANS-increase flow length
In tidal or wind and wave conditions there should be a ____ gap between the bottom of the
curtain and the floor of the water body. - ANS-1 foot
Initial storage capacity for a sediment trap is _______ yards per acre or _______ ft^3/acre -
ANS-134 cubic, 3600
Keep runoff velocities _____ and _____ runoff on site - ANS-low , retain
List 3 soil conditioners - ANS-Peat, sand, sludge
Max drainage are for a silt fence under _____ flow conditions is ____ acre per 100 ft of barrier
length - ANS-sheet, 1/4
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