Erosion and Sediment Control Exam
Questions With 100% Correct Answers!!!
Soil Erosiom CORRECT ANSWERS The process of detatchment and transport of
sediment particles caused by wind, rain, ice, and gravity. Erosion rates directly
correspond to the percentage of bare soil on a site.
Sedimentation CORRECT ANSWERS The deposition of soil particles
Potential Problems Arising From Construction Related Activities CORRECT ANSWERS
Degradation to downstream properties and waterways. Damage to new and existing
infrastructure. Nuisances: dust and mud tracked onto public streets
E&SC Plan CORRECT ANSWERS Used to show the location and size of the various
ESC practices. Phase 1 = Initial clearing and grading. Phase 2 = Finish grading and
protection of site infrastructure.
E&SC Narrative CORRECT ANSWERS Provides supporting calculations. Includes
information often redundant to Feasibility Report: vicinity map, neighboring properties,
soil types, critical areas of concern.
Factors Influencing Soil Erosion CORRECT ANSWERS Rainfall frequency and
distribution type; soil properties (permeability/cohesiveness); topography; vegetation (ie
surface cover)
Silt Fence CORRECT ANSWERS Proper installation requires that the fence be "keyed"
into the soil. Maximum drainage area of 0.25 ac/ 100 ft of fence. Maximum slope of 100
ft behind fence. VESCH Std. & Spec 3.05. Minor swales where D.A < 1 ac and Q< 1cfs.
Inlet Protection CORRECT ANSWERS VESCH Std. & Spec 3.07. Maximum drainage
area of 1 ac. VDOT #3, #357, or #5 coarse aggregate. May be used in conjunction with
silt fence (placed in between stone and inlet)
Construction Entrance CORRECT ANSWERS VESCH std and spec 3.02. VDOT #1
coarse aggregate. Dimensions: minimum 12' width, minimum 70' length, minimum 6"
thickness
Diversion Dikes CORRECT ANSWERS VESCH 3.09. Used to direct flow away from
vulnerable areas and into stabilized traps, basins, or channels. Maximum drainage area
of 5 ac. Minimum allowable height of 18". Minimum base width of 4.5'.
Temporary Slope Drain CORRECT ANSWERS VESCH 3.15. Maximum allowable
drainage area of 5 ac. Uniform pipe diameter, f(drainage area). Entrance and outlet
equipped with IP and OP.
Questions With 100% Correct Answers!!!
Soil Erosiom CORRECT ANSWERS The process of detatchment and transport of
sediment particles caused by wind, rain, ice, and gravity. Erosion rates directly
correspond to the percentage of bare soil on a site.
Sedimentation CORRECT ANSWERS The deposition of soil particles
Potential Problems Arising From Construction Related Activities CORRECT ANSWERS
Degradation to downstream properties and waterways. Damage to new and existing
infrastructure. Nuisances: dust and mud tracked onto public streets
E&SC Plan CORRECT ANSWERS Used to show the location and size of the various
ESC practices. Phase 1 = Initial clearing and grading. Phase 2 = Finish grading and
protection of site infrastructure.
E&SC Narrative CORRECT ANSWERS Provides supporting calculations. Includes
information often redundant to Feasibility Report: vicinity map, neighboring properties,
soil types, critical areas of concern.
Factors Influencing Soil Erosion CORRECT ANSWERS Rainfall frequency and
distribution type; soil properties (permeability/cohesiveness); topography; vegetation (ie
surface cover)
Silt Fence CORRECT ANSWERS Proper installation requires that the fence be "keyed"
into the soil. Maximum drainage area of 0.25 ac/ 100 ft of fence. Maximum slope of 100
ft behind fence. VESCH Std. & Spec 3.05. Minor swales where D.A < 1 ac and Q< 1cfs.
Inlet Protection CORRECT ANSWERS VESCH Std. & Spec 3.07. Maximum drainage
area of 1 ac. VDOT #3, #357, or #5 coarse aggregate. May be used in conjunction with
silt fence (placed in between stone and inlet)
Construction Entrance CORRECT ANSWERS VESCH std and spec 3.02. VDOT #1
coarse aggregate. Dimensions: minimum 12' width, minimum 70' length, minimum 6"
thickness
Diversion Dikes CORRECT ANSWERS VESCH 3.09. Used to direct flow away from
vulnerable areas and into stabilized traps, basins, or channels. Maximum drainage area
of 5 ac. Minimum allowable height of 18". Minimum base width of 4.5'.
Temporary Slope Drain CORRECT ANSWERS VESCH 3.15. Maximum allowable
drainage area of 5 ac. Uniform pipe diameter, f(drainage area). Entrance and outlet
equipped with IP and OP.
