5.13 How Does Permeable Pavement Work?

Which of the following are examples of impervious cover?

• parking lots, sidewalks, streets and driveways

• forests, wetlands, streams and rivers

What are the negative consequences of increased impervious cover?  (Choose 3)

• increasing the recharging of groundwater supplies

• decreasing groundwater recharge through infiltration

• increasing the magnitude of floods

• increasing pollutants getting washed into waterways

What is the purpose of a retention pond?

• to control flood peaks

• to promote recreational fishing

• to irrigate crops

What material is left out of the concrete recipe to make it permeable?

• cement

• sand

• rocks

What is located directly beneath the permeable pavement?

• a stone reservoir to hold the water as it soaks into the ground

• soil

Choose the statements below that are true regarding permeable pavements?   (Choose 2)

• they are very strong and are perfect for use in high traffic areas

• they can get clogged by dirt and leaves

• they can be damaged by cold weather

• they are good to use on slopes