Sedimentation and erosion control certification
Exam Q’s and A’s
Erosion - -is the process by which land surface is worn away by the action of wind, water,
and gravity.
-Sedimentation - -is the settling of soil particles
-Soil erosion is classified as either ____ erosion or ____ erosion - -wind , water
-Water erosion can be classified as either ______ erosion or _____ erosion - -overland ,
stream
-Four processes of overland erosion - -splash erosion, sheet erosion, rill erosion, gully
erosion
-Four principle factors influencing soil erosion are - -soil characteristics, vegetative cover,
topography, climate
-Physical effects of erosion and sedimentation - -increase flooding, reduce hydraulic
capacity, increased maintenance of storm water systems, increased water treatment costs,
decreased recreational value
-Biological effects of erosion and sedimentation - -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 - -extent,
duration
-Apply __________ practices to protect the disturbed area from off-site runoff and to protect
off-site areas from sediment damage - -perimeter control
-Apply ________ practices to prevent excessive on site damage - -erosion control
-Keep runoff velocities _____ and _____ runoff on site - -low , retain
-Stabilize disturbed areas ________ after final grading - -inmediately
-Implement a thorough ____ and ____ (inspection) program - -maintenance, follow up
-Type A soils have ___ infiltration rates and ___ runoff potential. Examples - -high, low
(Sand)
Exam Q’s and A’s
Erosion - -is the process by which land surface is worn away by the action of wind, water,
and gravity.
-Sedimentation - -is the settling of soil particles
-Soil erosion is classified as either ____ erosion or ____ erosion - -wind , water
-Water erosion can be classified as either ______ erosion or _____ erosion - -overland ,
stream
-Four processes of overland erosion - -splash erosion, sheet erosion, rill erosion, gully
erosion
-Four principle factors influencing soil erosion are - -soil characteristics, vegetative cover,
topography, climate
-Physical effects of erosion and sedimentation - -increase flooding, reduce hydraulic
capacity, increased maintenance of storm water systems, increased water treatment costs,
decreased recreational value
-Biological effects of erosion and sedimentation - -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 - -extent,
duration
-Apply __________ practices to protect the disturbed area from off-site runoff and to protect
off-site areas from sediment damage - -perimeter control
-Apply ________ practices to prevent excessive on site damage - -erosion control
-Keep runoff velocities _____ and _____ runoff on site - -low , retain
-Stabilize disturbed areas ________ after final grading - -inmediately
-Implement a thorough ____ and ____ (inspection) program - -maintenance, follow up
-Type A soils have ___ infiltration rates and ___ runoff potential. Examples - -high, low
(Sand)
