Erosion and Sediment Control
Comprehensive Questions
(Frequently Tested) with
Verified Answers
Soil Erosiom - Answer: 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 - Answer: The deposition of soil particles
Potential Problems Arising From Construction Related Activities - Answer: Degradation to downstream
properties and waterways. Damage to new and existing infrastructure. Nuisances: dust and mud tracked
onto public streets
E&SC Plan - Answer: 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 - Answer: Provides supporting calculations. Includes information often redundant to
Feasibility Report: vicinity map, neighboring properties, soil types, critical areas of concern.
Factors Influencing Soil Erosion - Answer: Rainfall frequency and distribution type; soil properties
(permeability/cohesiveness); topography; vegetation (ie surface cover)
Silt Fence - Answer: 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 - Answer: 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)
Comprehensive Questions
(Frequently Tested) with
Verified Answers
Soil Erosiom - Answer: 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 - Answer: The deposition of soil particles
Potential Problems Arising From Construction Related Activities - Answer: Degradation to downstream
properties and waterways. Damage to new and existing infrastructure. Nuisances: dust and mud tracked
onto public streets
E&SC Plan - Answer: 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 - Answer: Provides supporting calculations. Includes information often redundant to
Feasibility Report: vicinity map, neighboring properties, soil types, critical areas of concern.
Factors Influencing Soil Erosion - Answer: Rainfall frequency and distribution type; soil properties
(permeability/cohesiveness); topography; vegetation (ie surface cover)
Silt Fence - Answer: 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 - Answer: 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)
