SWPPP EXAMPREP REVIEW SHEET TESTED QUESTIONS AND ACCURATE ANSWERS

SWPPP EXAMPREP REVIEW SHEET TESTED
QUESTIONS AND ACCURATE ANSWERS

●● Reduction of pollutants is often achieved by:
Answer: Controlling the volume of stormwater runoff


●● Impervious surfaces such as buildings, homes, roads, sidewalks, and
parking lots, can significantly:
Answer: Alter the natural hydrology of the land by increasing the
volume, velocity, and temperature of runoff and by decreasing its
infiltration capacity.


●● Increasing the volume and velocity of stormwater runoff can cause:
Answer: - Severe stream bank erosion
- Flooding
- Degrade the biological habitat of these streams


●● Runoff from an unstabilized construction site can result in the loss
of:
Answer: approx. 35-45 tons of sediment per acre each year


●● The primary stormwater pollutant at a construction site is:
Answer: Sediment

, ●● Vegetative cover provides a number of critical benefits in preventing
erosion:
Answer: - Absorbs the energy of raindrops
- Slows velocity of runoff
- Increases infiltration
- Helps bind the soil


●● It is usually easier and less expensive to prevent erosion than it is to:
Answer: Control sediment from leaving a construction site


●● Erosion vs. Sedimentation
Answer: *Erosion* - the process by which the land surface is worn away
by the action of water or wind.


*Sedimentation* - the movement and settling out of suspension of soil
particles


●● Structural BMPs
Answer: - Silt Fences
- Sedimentation Ponds
- Erosion Control Blankets
- Temporary/Permanent Seeding