Erosion & Sediment Control questions
well answered passed
Why do we need to have erosion and sediment control? - correct answer ✔✔ We are trying to
control unnatural erosion and sedimentation of waterways
Causes for construction site erosion (2) - correct answer ✔✔ - Removal of vegetative cover
- Increased stormwater velocities due to impervious surfaces
Turbidity - correct answer ✔✔ Cloudiness or haziness of a fluid caused by large numbers of
suspended [soil] particles
Erosion Control - correct answer ✔✔ Keeping soil in place using vegetation or other means
Sediment Control - correct answer ✔✔ Dealing with soil once it's dislodged & in suspension;
keeping erosion on site so it does not cause pollution downstream
5 keys to prevent erosion - correct answer ✔✔ 1. minimize disturbed areas & protect natural
features
2. phase construction
3. control stormwater flow
4. stabilize the soils
5. protect slopes
5 keys to prevent sedimentation - correct answer ✔✔ 1. protect storm drain inlets
2. establish perimeter controls
well answered passed
Why do we need to have erosion and sediment control? - correct answer ✔✔ We are trying to
control unnatural erosion and sedimentation of waterways
Causes for construction site erosion (2) - correct answer ✔✔ - Removal of vegetative cover
- Increased stormwater velocities due to impervious surfaces
Turbidity - correct answer ✔✔ Cloudiness or haziness of a fluid caused by large numbers of
suspended [soil] particles
Erosion Control - correct answer ✔✔ Keeping soil in place using vegetation or other means
Sediment Control - correct answer ✔✔ Dealing with soil once it's dislodged & in suspension;
keeping erosion on site so it does not cause pollution downstream
5 keys to prevent erosion - correct answer ✔✔ 1. minimize disturbed areas & protect natural
features
2. phase construction
3. control stormwater flow
4. stabilize the soils
5. protect slopes
5 keys to prevent sedimentation - correct answer ✔✔ 1. protect storm drain inlets
2. establish perimeter controls
