VERIFIED ANSWERS|ACTUAL COMPLETE EXAM|
ALREADY GRADED A+
Erosion ✔Correct answer-The process by which the land surface is worn away by the action of
wind, water, and gravity
Sedimentation ✔Correct answer-The settling out of particles transported by wind and water
Soil erosion can be classified as either ___ erosion or ___ erosion, and the sources can be either ___
or ___ ✔Correct answer-wind, water, natural, manmade
Water erosion can be classified as either ___ erosion or ___ and ___ erosion ✔Correct answer-
overland, stream, channel
What are the four processes of overland erosion? ✔Correct answer-Splash or rain drop, sheet, rill,
and gully
What are the four principle factors influencing soil erosion? ✔Correct answer-Soil characteristics,
vegetative cover, topography, and climate
List three physical effects of erosion and sedimentation ✔Correct answer-Increased flooding
reduced hydraulic capacity in rivers, streams, channels, reservoirs; increased maintenance of
stormwater systems; increased water treatment costs; decreased recreational value
List three biological effects of erosion and sedimentation ✔Correct answer-Reduced light for
aquatic plants; clogs fish gills; impairs spawning; disrupts food chain; blankets bottom, suppresses
aquatic life; disrupts ecosystem
Plan 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
Apply ___ practices to protect the disturbed area from off-site runoff and to protect off-site areas
from sediment damage ✔Correct answer-perimeter control
Apply ___ practices to prevent excessive on-site damage ✔Correct answer-erosion control
Keep runoff velocities ___ and ___ runoff on the site ✔Correct answer-low; retain
It is very important to 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; 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;
muck
Soils in the Type A hydrologic group have ___ infiltration rates and ___ runoff potential even when
thoroughly wetted ✔Correct answer-high; low
Soils in the Type D hydrologic group have ___ infiltration rates and ___ runoff potential even when
thoroughly wetted ✔Correct answer-low; high
The ___ is the only factor in the Universal Soil Loss Equation which is beyond the developer's control
✔Correct answer-rainfall erosion index
Slope ___, ___, and ___ are the factors most easily manipulated by the developer ✔Correct
answer-length; gradient; cover factor
The RUSLE is used on our construction sites to predict ___ ✔Correct answer-soil loss
Stabilize disturbed lands immediately to save ___ ✔Correct answer-money
Who can you contact for soil survey information? ✔Correct answer-NRCS (Natural Resources
Conservation Services)
What are the five soil forming factors? ✔Correct answer-Climate, topography, organisms, parent
material, and time
(T/F) Waste disposal is a problem for the individual workers and some subcontractors, but it's no big
deal ✔Correct answer-False
(T/F) Truck washing should be done in a designated area, not near the perimeter controls ✔Correct
answer-True
(T/F) The public needs to understand that dust is just a normal part of construction ✔Correct
answer-False
A temporary gravel construction entrance must extend the full width of the entrance. It must be at
least ___ feet long and at least ___ inches thick. Aggregate should be ___ in. stone or FDOT No. ___
stone. Prior to installing the gravel, a ___ should be placed on the ground to simplify installation and
maintenance ✔Correct answer-50; 6; 2; 1; geotextile
Maintenance of a temporary gravel construction entrance should be performed when void spaces
are full of ___ ✔Correct answer-sediment
The maximum drainage area for a silt fence under sheet flow conditions is ___ acre per 100 feet of
barrier length ✔Correct answer-1/4
The average usable life of a silt fence is ___ months ✔Correct answer-6
For proper installation of a silt fence, a trench ___ inches deep and ___ inches wide must be
excavated. This will allow the ___ inches of fabric to extend into the ground for backfilling and
compaction ✔Correct answer-4; 4; 8