Sedimentation Control Study Guide
fully solved
Chapter 1 - Erosion and Sedimentation - correct answer ✔✔
___________ is the process by which the land surface is worn away by the action of wind,
water, and gravity. - correct answer ✔✔ erosion
___________ is the settling out of soil particles transported by water and wind. - correct answer
✔✔ sedimentation
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
four processes of overland erosion are? - correct answer ✔✔ splash or rain drop erosion, sheet
erosion, rill erosion, and gully erosion
four principle factors influencing soil erosion are? - 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; and 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
planning 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 _____________ program as required in the
Construction Generic Permit (CGP). - correct answer ✔✔ maintenance; follow up
Chapter 2 - Soils - correct answer ✔✔
, soil particles smaller than 0.002 mm are classified as ______ and _______ are the two soil types
that cause the most erosion/turbidity problems in Florida and the Word - correct answer ✔✔
clay; muck
Soils in the Type A hydrologic group have _________ infiltration rate and _________ runoff
potential even when thoroughly wetted - correct answer ✔✔ high; low
Soils in the Type D hydrologic group have ___________ infiltration rates and _______ runoff
potential 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 index
________________, _______________, and _______________ are the factors most easily
manipulated by the developer - correct answer ✔✔ slope length, gradient, and 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
what are the five soil forming factors? - correct answer ✔✔ climate, topography, organisms,
parent material, time
Chapter 3 - Temporary BMPs for Erosion and Sedimentation Control - correct answer ✔✔