Intro to LIDs and Bioretention

Bioretention is an example of what kind of LID?

• Structural LID

• Non-structural LID

• Integrated LID

• Integrated non-structural LID

Examples of LID Practices can be understood as Prevent - Detain - Infiltrate - Evapotranspire - Capture - Re-use

Which of the following does not fit into any of those categories?

• Swales. Terracing, and check dams

• Rain barrels and cisterns

• Water Turbines

• Green Roofs

Well designed LID Practices with pre-treatment are easier to maintain than conventional SWM practices

• True

• False

Which of the following is a direct benefit of LID?

• Delayed timing of peak runoff

• Improved stream erosion

• Reduced runoff temperature

• All of the above

The ratio of impervious drainage to pervious/facility footprint area (I:P area ratio) for an area being treated by a bioretention cell should be kept at what ratio? (footprint of the impervious drainage area)

• 1:1 to 1:2

• 100:1 to 50:1

• 5:1 to 20:1

• 1:2 to 3:4

Which options are NOT roles of plants in biorientation systems?

• Pollutant removal, Asethetics

• Water uptake, Flow barriers

• Soil stabilization, Aid for Infiltration

• Nutritious and accessible roadside vegetables

Having a diverse selection of plants in a bioretention system:

• Increases the success of the system

• Is prohibitively costly

• Can be devastating as plants are tribal

• Scares away wildlife and small woodland creatures